What is the name of this former Cartoon Network show?

Saturday, February 5th, 2011 at 2:26 pm

I vaguely remember a show on Cartoon Network several years ago about a group of musical kids and their black music teacher/mentor. There was a tall, awkward red haired kid in the group, but I can’t exactly remember the other characters. I think the creator/voice of the music teacher was possibly a famous musician. Does anyone else remember this?