PocketSynth
- Play the on-screen keyboard or compose a song. Save and restore songs by cut and paste to Memopad. By Eric Cheng. [Shareware]
- http://www.echeng.com/software/palmpilot/

RhythmPro
- Create and play custom drum patterns with real digitized drum sounds, or use it as a highly versatile metronome.
- http://innovation-z.com/

MusicPal
- A program to create, edit, view and listen to standard midi files. With the Palm midi conversion program can exchange midi files with PC.
- http://www.jthesing.com/musicpal/