soli
coda
Octet
lute, lyre, harp, drum
The four-letter word for a musical tailpiece is "stop." In music, a stop can refer to a mechanism that controls the flow of air in instruments like organs, but it can also relate to elements that affect the sound or emission of notes in various musical contexts.
cord
group (musical), or "musical group"
Clan
clan
team
dick
club
clan, pack