This is a demo of The Lamb Lies Down On Broadway by Genesis and played on PianoStudio (App Store link) on an iPhone.

Features:

• Three high-quality piano instruments (Grand 1, Grand 2, Upright)
• 9 built-in demo songs
• Built-in Recorder with overdubbing, variable tempo, metronome, and undo/redo
• Tilt-controlled volume and sustain pedal
• Awesome phrase editor lets you create repeating patterns or passages that would otherwise be impossible to play
• Built-in chord library with over 10,000 chords
• Lots of visual customizations to help you organize and play your tunes
• 5 banks of buttons per song
• 9 available button layout styles with between 8 and 40 buttons, plus keyboard-and-buttons style

PianoStudio retails for $6.99.

Here’s another demo of PianoStudio in action:

http://www.youtube.com/watch?v=3gTXD6SE0TI