It might not be the most pleasant music -- some would even argue that it's not music at all -- but there's definitely, uh, something going on in the above RepeaterDS demonstration video. According to developer Bret (a.k.a. Clone45), the same programmer behind cellular automaton sequencer GlitchDS, RepeaterDS is "a music application that allows you to 'play' a sample by drawing on the DS screen.
The application imports audio files and records your gestures, with vertical movements controlling repeat length and horizontal movements controlling the playback offset into the sample. Messing with the directional pad and pressing different buttons will also affect the resulting sounds in some manner incomprehensible to us.
We're not sure how exactly one would incorporate the stuttered audio into anything, except for maybe in a stop-motion zombie film featuring G.I. Joe figures, but the effect is pretty cool!