this thread is supposed to give you some information about the possibilities to create music on the nintendoDS. as far as it comes to home-brewed applications you will need a ds card adapter like Edge, R4, CycloDS, ect.
here we go:
GlitchDS (homebrew, free)
Cellular Automaton music sequence with a really nice minimalist interface. you can load your own sounds in .raw format and it also has a visualization feature for the sound created, 8bit - style of course. ideal for IDM and noisy sounds.
RepeaterDS (homebrew, free)
repeaterDS is a free music application for the Nintendo DS that allows you to “play” a sample by drawing on the DS screen. The vertical axis controls repeat length. The horizontal axis controls the playback offset into where to buy watches replicas the sample.
CellsDS (homebrew, free)
cellsDS is a free flexible, programmable grid-based music sequencer. cellsDS is six sequencers in one, with each sequencer being controlled by a user definable Lua script. its interface is quite similar to the Tenori-On and Monome controller. latest version has a midi-Output feature
ProteineDS (homebrew, free)
homebrew scratch application. load a sound, set cue points, pitch, pan, ect. nice for cutting beats and a capellas.
A really nice adaptation of the legendary Korg MS-20 synthesizer. 16step, 2 synths, one drum sequencer and the ability to jam with friends through wifi synch.
Nitro Tracker DS (homebrew, free)
NitroTracker is a FastTracker II style tracker. it has many nice features such as: recording sound with the installment loans no credit check DS microphone, loading .wav and xm modules(no effects yet), midi via dsmi, ...
nanoloop is a simplified stepsequencer, addictve character of loop-based music creation. works on GBA.
Elektroplankton DS (commercial)
The game offers two game modes — Performance and Audience. The Performance mode is considered to be the more significant portion of Electroplankton, allowing the user to interact with the plankton with the use of the stylus, touchscreen, and microphone. Audience mode Details is like a demo mode.
anything missing? post below.