RASP takes the snare drum apart and keeps the part with the character: the wires. A triggered drum voice built around the rattle itself — WIRES sets the grain density from a few loose strands to a dense buzz, RATTLE sets the wire decay from 5 ms to a full second, and SNAP sets the attack from a soft tap to a hard crack. A shell thump sits underneath (TUNE, 80 to 400 Hz) and the wire grain rate follows its pitch. The WIRE output carries the rattle alone, without the thump, for layering. Series One.