Zircus is:

Eric Bergkvist - Trombone, Tuba, Tambourine, Funny Noises, Pretty Backup Vocals
Catharine Clune - Violin, Smokes and Cackles
Chris Enright - Lead Vocals on Tracks 11, 13, and 16, Tenor Sax, Baritone Sax, Clarinet, Percussion, Slide Whistle, Tin Flute, Wise Cracks
Morgan Neville - Acoustic Bass, Electric Bass, Voice of Reason
Sean O'Melveny - Trumpet, Percussion, Falsetto
Josh Pollock - Lead Vocals on Tracks 5 & 9, Acoustic and Electric Guitars, Banjo, Drums, Percussion, Keyboards, Whistle, Pots and Pans, Police Whistle
Ray Wilcox - Lead Vocals, Snare Drum, Floor Toms, Percussion, Samples, Piano, Harmonica

Zircus has released one album through Racer Records: