I would like to introduce the Detroit Symphony Civic Ensembles - I'm in the Sinfona:

http://www.detroitsymphony.com/main.taf?p=4,3

it is SOOOO fun


and also Oakland Youth Orchestra - I'm in Philharmonia:

http://oyomi2.org/

OYO is better for group fun, CYE is better for section fun.

all in all, they are both fun

alex