I think the title is pretty self-explanatory. What's the biggest band you've ever played in?
I ask because I am suddenly finding myself in a 9-piece:
drums, 2 guitars, bass, lead vocals, 2 female backup vocalists, 2 alternate female backup vocalists, and we're in the process of integrating a horn section!
big bands may be a pain in the arse to coordinate, but jeez are they fun!