|posted: 9/16/2004 at 4:57:52 PM ET|
A quartet is usually made up of piano, bass, drums, and some type of wind instrument( sax or trumpet) althought the Modern Jazz Quartet (MJQ) used Vibes instead of a wind instrument. A quintet might add a guitar or another wind instrument. Actually other than the piano ,bass and drum there is no set instrumentation. It's kinda what you like as a group.