From GameBrew - a wiki dedicated to Video Game Homebrew.
MyPiano is a piano application that vertualize a 61 note piano. It can play 5 octaves of notes (61) and can be used on the go for piano playing.
It was submitted to NEO Spring Coding Compo 2009, ranked 9th in APP section.
Down - C
Left - D
Up - E
Right - F
B - G
Y - A
X - B
A - High C
Hold L while playing a note - plays the flat of that note
Hold R while playing a note - plays the sharp of that note
Hold L and press R - moves the octave up by one
Hold R and press L - moves the octave down by one
Octave buttons - automatically moves to an octave
Start - lowers the octave by one
Select - increases the octave by one
DS Motion card - left will lower the octave by one, right will increase the octave by one