Stop as soon as your pops coincide. Medium loudness, agree on and sustain some pitch slightly out of tune with each other. Play any five low pitches in any continuously changing order as fast as possible. Pass sustained note around. Note should overlap slightly at head and tail.
Note can change from player to player.
Bass gtr use volume pedal if necessary. Play a single note repeatedly, staccato, as fast as possible. Do not necessarily play for the full 4 seconds. Do not necessarily start immediately. Play any single short noise repeatedly.