diff --git a/Mobile/NUI/Piano/.gitignore b/Mobile/NUI/Piano/.gitignore
new file mode 100755
index 00000000..e553c746
--- /dev/null
+++ b/Mobile/NUI/Piano/.gitignore
@@ -0,0 +1,180 @@
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+*.DotSettings
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+
+# Visual Studio 2015 cache/options directory
+.vs/
+
+# .NET Core
+*.project.lock.json
+*.project.fragment.lock.json
+artifacts/
+**/Properties/launchSettings.json
+
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/packages/*
+# except build/, which is used as an MSBuild target.
+!**/packages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/packages/repositories.config
+# NuGet v3's project.json files produces more ignoreable files
+*.nuget.props
+*.nuget.targets
+
+
+### Android START ###
+# Built application files
+*.apk
+*.ap_
+
+# Files for the Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+
+# Gradle files
+.gradle/
+build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Log Files
+*.log
+
+# Android Studio Navigation editor temp files
+.navigation/
+
+### Android Patch ###
+gen-external-apklibs
+
+
+### Java ###
+*.class
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+
+### Intellij ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio
+
+*.iml
+
+## Directory-based project format:
+.idea/
+# if you remove the above rule, at least ignore the following:
+
+# User-specific stuff:
+# .idea/workspace.xml
+# .idea/tasks.xml
+# .idea/dictionaries
+
+# Sensitive or high-churn files:
+# .idea/dataSources.ids
+# .idea/dataSources.xml
+# .idea/sqlDataSources.xml
+# .idea/dynamic.xml
+# .idea/uiDesigner.xml
+
+# Gradle:
+# .idea/gradle.xml
+# .idea/libraries
+
+# Mongo Explorer plugin:
+# .idea/mongoSettings.xml
+
+## File-based project format:
+*.ipr
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+/captures
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+
+### Android END ###
+
+### Resharper ###
+
+_Resharper*
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/LICENSE b/Mobile/NUI/Piano/LICENSE
new file mode 100755
index 00000000..70b133e5
--- /dev/null
+++ b/Mobile/NUI/Piano/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
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+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "{}"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright 2017 Samsung
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano.sln b/Mobile/NUI/Piano/Piano.sln
new file mode 100755
index 00000000..ef7943a7
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.32929.386
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Piano.Tizen.Mobile", "Piano\Piano.Tizen.Mobile\Piano.Tizen.Mobile.csproj", "{88E15381-DFC8-41CA-9D73-078B77F8A6BE}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {88E15381-DFC8-41CA-9D73-078B77F8A6BE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {88E15381-DFC8-41CA-9D73-078B77F8A6BE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {88E15381-DFC8-41CA-9D73-078B77F8A6BE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {88E15381-DFC8-41CA-9D73-078B77F8A6BE}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ SolutionGuid = {20650979-F309-4E7A-A3F4-836C2B3E9834}
+ EndGlobalSection
+EndGlobal
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano.Tizen.Mobile.cs b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano.Tizen.Mobile.cs
new file mode 100755
index 00000000..71b8db28
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano.Tizen.Mobile.cs
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using Piano.Models;
+using Piano.Views;
+using System;
+using Tizen.NUI;
+
+namespace Piano.Tizen.Mobile
+{
+ class Program : NUIApplication
+ {
+ protected override void OnCreate()
+ {
+ base.OnCreate();
+
+ Window window = Window.Instance;
+ window.BackgroundColor = Color.Cyan;
+ window.KeyEvent += OnKeyEvent;
+
+ try
+ {
+ Sound.Init();
+ }
+ catch (Exception e)
+ {
+ global::Tizen.Log.Error("Piano", "Init : " + e.Message);
+ }
+
+ MainPage page = new MainPage();
+ window.Add(page);
+ window.AddAvailableOrientation(Window.WindowOrientation.Landscape);
+ }
+
+ public void OnKeyEvent(object sender, Window.KeyEventArgs e)
+ {
+ if (e.Key.State == Key.StateType.Down && (e.Key.KeyPressedName == "XF86Back" || e.Key.KeyPressedName == "Escape"))
+ {
+ Exit();
+ }
+ }
+
+ static void Main(string[] args)
+ {
+ var app = new Program();
+ app.Run(args);
+ }
+ }
+}
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano.Tizen.Mobile.csproj b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano.Tizen.Mobile.csproj
new file mode 100755
index 00000000..d14b274e
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano.Tizen.Mobile.csproj
@@ -0,0 +1,38 @@
+
+
+
+ Exe
+ netcoreapp3.1
+ 1
+
+
+
+ portable
+
+
+ None
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Controls/Key.xaml b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Controls/Key.xaml
new file mode 100755
index 00000000..da2470a1
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Controls/Key.xaml
@@ -0,0 +1,17 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Controls/Key.xaml.cs b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Controls/Key.xaml.cs
new file mode 100755
index 00000000..63d46dfc
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Controls/Key.xaml.cs
@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using Tizen.NUI;
+using Tizen.NUI.Binding;
+using Tizen.NUI.BaseComponents;
+
+namespace Piano.Controls
+{
+ ///
+ /// Interaction logic for Key.xaml.
+ ///
+ public partial class Key : ImageView
+ {
+ #region fields
+
+ ///
+ /// Local storage of
+ ///
+ private int _soundNumber;
+ private Timer mViewTimer;
+
+ #endregion
+
+ #region properties
+
+ ///
+ /// Bindable property that allows to set image source for pressed state.
+ ///
+ public static BindableProperty PressedImageSourceProperty =
+ BindableProperty.Create(nameof(PressedImageSource), typeof(string), typeof(Key));
+
+ ///
+ /// Bindable property that allows to set image source for unpressed state.
+ ///
+ public static BindableProperty UnPressedImageSourceProperty =
+ BindableProperty.Create(nameof(UnPressedImageSource), typeof(string), typeof(Key),
+ propertyChanged: UnPressedImageSourcePropertyChanged);
+
+ public Vector4 LayoutBounds
+ {
+ set
+ {
+ PositionX = value.X * Window.Instance.Size.Height;
+ PositionY = value.Y * Window.Instance.Size.Width;
+ SizeWidth = value.Z * Window.Instance.Size.Height;
+ SizeHeight = value.W * Window.Instance.Size.Width;
+ }
+ }
+ ///
+ /// Gets or sets sound index that will be played.
+ ///
+ public int SoundNumber
+ {
+ get => _soundNumber;
+ set
+ {
+ _soundNumber = value;
+ OnPropertyChanged();
+ }
+ }
+
+ ///
+ /// Gets or sets image source for pressed state.
+ ///
+ public string PressedImageSource
+ {
+ get => GetValue(PressedImageSourceProperty).ToString();
+ set => SetValue(PressedImageSourceProperty, value);
+ }
+
+ ///
+ /// Gets or sets image source for unpressed state.
+ ///
+ public string UnPressedImageSource
+ {
+ get => GetValue(UnPressedImageSourceProperty).ToString();
+ set => SetValue(UnPressedImageSourceProperty, value);
+ }
+
+ ///
+ /// Gets or sets command that is executed on click.
+ ///
+ public Command OnClickedCommand { get; set; }
+
+ #endregion
+
+ #region methods
+
+ ///
+ /// Default class constructor.
+ ///
+ public Key()
+ {
+ InitializeComponent();
+ Root.TouchEvent += OnTouchEvent;
+ }
+
+ private bool OnTouchEvent(object source, View.TouchEventArgs e)
+ {
+ ExecuteClickCommand();
+ return false;
+ }
+
+ ///
+ /// Invoked on image source change.
+ /// Updates image source.
+ ///
+ /// The bindable object that contains the property.
+ /// Old value of the property.
+ /// New value of the property.
+ private static void UnPressedImageSourcePropertyChanged(BindableObject bindable, object oldValue,
+ object newValue)
+ {
+ if (bindable is Key key)
+ {
+ key.UpdateImageSource(newValue.ToString());
+ }
+ }
+
+ ///
+ /// Executed on image click.
+ ///
+ private void ExecuteClickCommand()
+ {
+ UpdateImageSource(PressedImageSource);
+ //OnClickedCommand?.Execute(null);
+
+ mViewTimer = new Timer(300);
+ mViewTimer.Tick += OnTimerTick;
+ mViewTimer.Start();
+ }
+
+ private bool OnTimerTick(object sender, Timer.TickEventArgs args)
+ {
+ UpdateImageSource(UnPressedImageSource);
+
+ mViewTimer.Stop();
+ mViewTimer.Dispose();
+
+ return false;
+ }
+
+ ///
+ /// Updates image source.
+ ///
+ /// New image source.
+ private void UpdateImageSource(string newSource)
+ {
+ ResourceUrl = newSource;
+ }
+
+ #endregion
+ }
+}
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Models/ISound.cs b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Models/ISound.cs
new file mode 100755
index 00000000..f7a18752
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Models/ISound.cs
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using System.Threading.Tasks;
+
+namespace Piano.Models
+{
+ ///
+ /// Interface containing methods of sound player.
+ ///
+ public interface ISound
+ {
+ #region methods
+
+ ///
+ /// Initializes sound player.
+ ///
+ /// Task with initialization.
+ Task Init();
+
+ ///
+ /// Plays sound with given index.
+ ///
+ /// Sound index.
+ ///
+ /// Task with bool result.
+ /// Result is true if playing was successful, false otherwise.
+ ///
+ Task Play(int soundIndex);
+
+ #endregion
+ }
+}
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Models/Sound.cs b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Models/Sound.cs
new file mode 100755
index 00000000..bc844d38
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Models/Sound.cs
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using System.Threading.Tasks;
+using Tizen.NUI.Binding;
+using Piano.Tizen.Mobile.Services;
+
+namespace Piano.Models
+{
+ ///
+ /// Model for sound player.
+ ///
+ public static class Sound
+ {
+ #region fields
+
+ ///
+ /// Sound player context.
+ ///
+ private static readonly ISound _sound;
+
+ #endregion
+
+ #region methods
+
+ ///
+ /// Default class constructor.
+ ///
+ static Sound()
+ {
+ _sound = new SoundService();
+ }
+
+ ///
+ /// Initializes sound player.
+ ///
+ /// Task with initialization.
+ public static Task Init()
+ {
+ return _sound.Init();
+ }
+
+ ///
+ /// Plays sound with given index.
+ ///
+ /// Sound index.
+ ///
+ /// Task with bool result.
+ /// Result is true if playing was successful, false otherwise.
+ ///
+ public static Task Play(int soundIndex)
+ {
+ return _sound.Play(soundIndex);
+ }
+
+ #endregion
+ }
+}
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Piano.csproj b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Piano.csproj
new file mode 100755
index 00000000..ce72b0fc
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Piano.csproj
@@ -0,0 +1,22 @@
+
+
+
+ netcoreapp3.1
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/ViewModels/KeyViewModel.cs b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/ViewModels/KeyViewModel.cs
new file mode 100755
index 00000000..05e452b7
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/ViewModels/KeyViewModel.cs
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using Piano.Models;
+using Tizen.NUI.Binding;
+
+namespace Piano.ViewModels
+{
+ ///
+ /// ViewModel class for single key.
+ ///
+ public class KeyViewModel : BindableObject
+ {
+ #region properties
+
+ ///
+ /// Bindable property that allows to set sound index that will be played.
+ ///
+ public static BindableProperty SoundNumberProperty =
+#pragma warning disable Reflection // The code contains reflection
+ BindableProperty.Create(nameof(SoundNumber), typeof(int), typeof(KeyViewModel), 0);
+#pragma warning restore Reflection // The code contains reflection
+
+ ///
+ /// Bindable property that allows to set command that plays sound.
+ ///
+ public static BindableProperty PlaySoundCommandProperty =
+#pragma warning disable Reflection // The code contains reflection
+ BindableProperty.Create(nameof(PlaySoundCommand), typeof(Command), typeof(KeyViewModel));
+#pragma warning restore Reflection // The code contains reflection
+
+ ///
+ /// Gets or sets sound index that will be played.
+ ///
+ public int SoundNumber
+ {
+ get => (int)GetValue(SoundNumberProperty);
+ set => SetValue(SoundNumberProperty, value);
+ }
+
+ ///
+ /// Gets or sets command that plays sound.
+ ///
+ public Command PlaySoundCommand
+ {
+ get => (Command)GetValue(PlaySoundCommandProperty);
+ set => SetValue(PlaySoundCommandProperty, value);
+ }
+
+ #endregion
+
+ #region methods
+
+ ///
+ /// Default class constructor.
+ ///
+ public KeyViewModel()
+ {
+ PlaySoundCommand = new Command(PlaySound);
+ }
+
+ ///
+ /// Plays sound.
+ ///
+ private async void PlaySound()
+ {
+ await Sound.Play(SoundNumber);
+ }
+
+ #endregion
+ }
+}
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Views/MainPage.xaml b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Views/MainPage.xaml
new file mode 100755
index 00000000..37b8ae86
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Views/MainPage.xaml
@@ -0,0 +1,80 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Views/MainPage.xaml.cs b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Views/MainPage.xaml.cs
new file mode 100755
index 00000000..5627a483
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Piano/Views/MainPage.xaml.cs
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using Tizen.NUI;
+using Tizen.NUI.BaseComponents;
+
+namespace Piano.Views
+{
+ ///
+ /// Interaction logic for MainPage.xaml
+ ///
+ public partial class MainPage
+ {
+ #region methods
+
+ ///
+ /// Default class constructor.
+ ///
+ public MainPage()
+ {
+ InitializeComponent();
+ }
+
+ #endregion
+ }
+}
\ No newline at end of file
diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Services/SoundService.cs b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Services/SoundService.cs
new file mode 100755
index 00000000..0b98f23c
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/Services/SoundService.cs
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using Piano.Models;
+using System.Threading.Tasks;
+using Piano.Tizen.Mobile.Services;
+using Tizen.Applications;
+using Tizen.Multimedia;
+using Tizen.NUI.Binding;
+
+namespace Piano.Tizen.Mobile.Services
+{
+ ///
+ /// Service that plays sounds.
+ ///
+ public class SoundService : ISound
+ {
+ #region fields
+
+ ///
+ /// Maximum sound index.
+ ///
+ private const int MAX_SOUND_INDEX = 13;
+
+ ///
+ /// Indicates if player is initialized.
+ ///
+ private bool _initialized;
+
+ ///
+ /// Contains every sounds.
+ ///
+ private Player[] _sounds;
+
+ #endregion
+
+ #region methods
+
+ ///
+ /// Initializes sound player.
+ ///
+ /// Task with initialization.
+ public async Task Init()
+ {
+ if (_initialized)
+ {
+ return;
+ }
+
+ var resPath = Application.Current.DirectoryInfo.Resource;
+ _sounds = new Player[MAX_SOUND_INDEX + 1];
+
+ for (var i = 0; i <= MAX_SOUND_INDEX; i++)
+ {
+ var player = new Player
+ {
+ IsLooping = false
+ };
+
+ player.SetSource(new MediaUriSource($"file://{resPath}/sounds/{i}.wav"));
+
+ await player.PrepareAsync();
+
+ _sounds[i] = player;
+ }
+
+ _initialized = true;
+ }
+
+ ///
+ /// Plays sound with given index.
+ ///
+ /// Sound index.
+ ///
+ /// Task with bool result.
+ /// Result is true if playing was successful, false otherwise.
+ ///
+ public async Task Play(int soundIndex)
+ {
+ if (!_initialized || soundIndex < 0 || soundIndex > MAX_SOUND_INDEX)
+ {
+ return false;
+ }
+
+ var player = _sounds[soundIndex];
+
+ if (player.State == PlayerState.Idle)
+ {
+ return false;
+ }
+
+ await player.SetPlayPositionAsync(0, false);
+
+ player.Start();
+
+ return true;
+ }
+
+ #endregion
+ }
+}
\ No newline at end of file
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diff --git a/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/tizen-manifest.xml b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/tizen-manifest.xml
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index 00000000..d9f5f8bd
--- /dev/null
+++ b/Mobile/NUI/Piano/Piano/Piano.Tizen.Mobile/tizen-manifest.xml
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+ Piano.Tizen.Mobile.png
+
+
+
+
+
+
+
diff --git a/Mobile/NUI/Piano/README.md b/Mobile/NUI/Piano/README.md
new file mode 100755
index 00000000..51d61afc
--- /dev/null
+++ b/Mobile/NUI/Piano/README.md
@@ -0,0 +1,14 @@
+# Piano
+Piano is a sample application that demonstrates how to play sounds using [Tizen Multimedia API](https://samsung.github.io/TizenFX/stable/api/Tizen.Multimedia.html).
+
+![MainPage](./Screenshots/main_page.png)
+
+### Features
+* Playing sound on key press.
+
+### Prerequisites
+* [Visual Studio](https://www.visualstudio.com/) - Buildtool, IDE
+* [Visual Studio Tools for Tizen](https://docs.tizen.org/application/vstools/install) - Visual Studio plugin for Tizen .NET application development
+
+### Author
+* Guowei Wang
diff --git a/Mobile/NUI/Piano/Screenshots/main_page.png b/Mobile/NUI/Piano/Screenshots/main_page.png
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