Awesome, that's 4 out of 8 possible sidekicks signed up already. OP updated accordingly.
EDIT: I really hope at least some partnerships make it past round 5 because I think collaborate concept albums could be really cool. In fact, I'll say now that even partnerships that don't make it past round 5, do feel free to make a concept album anyway and I'll still listen and rate!
EDIT 2: Actually, if people would like, I'd be very happy to swap rounds so that round 5 is concept album and the final is greatest hits, so that everyone has the chance to collaborate and create a concept album? Thoughts?