Remain Calm has put together a list of its top 24 music apps for the Nintendo DS:

1. bliptracker - a drum machine & sequencer
2. dsmcu - MCU-compatible mix controller
3. Protein[DS] - sample looper, scratcher, glitcher
4. nitrotracker
5. kaosDS - converts touchscreen data into midi over wifi
6. sampling keyboard
7. dstep v2 - a visual sequencer
8. glitchDS - a cellular automation sequencer
9. repeaterDS - stuttering sample player
10. midipad - a DS Kaoss pad clone
11. toypiano - a sampled piano
12. dstar - MIDI sequencer
13. monome ds - an open-source Monome emulation
14. soundcells - cool looking virtual synthesizer
15. ukulele - a virtual ukulele
16. dssynth - an open source DS synth
17. MIDI Jammer - a graphical MIDI tool
18. AXE - move the stylus around on the touch screen to create simplistic music
19. pulse dsi - a MIDI synth
20. drummers v2
21. FUDI Kaos DS
22. knobs and sliders
23. drum me - virtual drum kit
24. strum me - a virtual guitar

Check out the Remain Calm site for screenshots and more info.

If you’ve tried these or other DS music apps, let me know what you think in the comments.