Returns
| "ride"
| "kick"
| "snare"
| "sideStick"
| "handClap"
| "closedHiHat"
| "pedalHiHat"
| "openHiHat"
| "crash"
| "tambourine"
| "highTom"
| "midTom"
| "lowTom"
| "shaker"
| undefined
The voice, or undefined for a note this generator never emits.
The voice a percussion note number names.