Piano Canvas - HTML5
HTML5 Piano with Multitouch
Multi-touch Keyboard (Play Chords)
Mouse or Keyboard Control
Easy to Change The Source Sounds
Playable on all platforms (Mobile, PC, etc.)
Includes Construct 2 source file
Play full screen, embed in a web page, or convert to a mobile app.
Note: Windows Phone IE browser has compatibility issues with audio, other platforms work great.