Rock Creek Jazz can perform in various combinations of instruments and vocalists:
Duo - the basic group is guitar and bass guitar
Trio - the group can be two guitars and bass; guitar, bass and piano; guitar, bass and congas; guitar, bass, and horn or wind player; or guitar, bass, and vocalist
Quartet - the group can be any four of the above instruments, or add violin
Quintet or larger - just about any combination you might care to explore