I finally got to see this and it was even better than I expected. It consists of:
The Indian Rhythm Section(IRS), 3 guys each with a different small percussion instrument who also do rhythmic vocals
Kevin O'Day on drums
Helen Grillot on cello
Harry Hardin on Violin
A guy on congas/bongos who spoke spanish to me when I walked in
It was awesome! They started off with an instrumental without IRS. Oh was I happy I finally woke up and made it to this! They did Eliza and some other old favorites as well as some tunes I don't know. It was about 1.5 hours of awesome music.
I just found this when I was trying to figure out the names of some of the people on stage: