There are two Caltech Jazz Bands and each group rehearses one night a week. The bands often invite local jazz professionals to perform as guest artists and clinicians.
Some past clinicians include members of "Big Bad Voodoo Daddy", the "Brian Setzer Orchestra", Gordin Goodwin’s Big Phat Band”, Bill Holman from the Bill Holman Band, and members of the great Count Basie and Duke Ellington Orchestras.
Artists who have played with the bands include: Billy Childs, Steve Houghton, Bill Watrous, Bobby Shew, Gary Foster, Sal Lazono, Wayne Bergeron, and Greg Bisonette.
The latest CD by the Caltech Jazz Bands, The Capitol Sessions, was recorded at the famous Capitol Studios in Hollywood.