quin·tet also quin·tette 
(kwĭn-tĕt)
(kwĭn-tĕt)n.
1. Music
a. A composition for five voices or five instruments.
b. A group of five singers or five instrumentalists.
2. A group of five.
[Probably from Italian quintetto, diminutive of quinto, fifth, from Latin quīntus; see penkwe in the Appendix of Indo-European roots.]