Jester Interactive is to release a version of Music on Nintendo’s forthcoming handheld, the Game Boy Advance. 
The Music software programs for PC, PlayStation and PlayStation 2 allows budding musicians to create their own songs by programming the beats, bass-lines and melodies. 
Additionally, Pocket Music will feature music-based puzzle games with both single and two-player options. 
Pocket Music will have more than 600 samples built-in that can be used to create riffs. Once you have created a riff, you can then add effects to it and layer and sequence it with other riffs to produce your own tunes. 
Pocket Music is pencilled in for a Quarter 3 release.