Glee Costars Support Cory Monteith's Solo Project

Singer performs for the first time with his band in L.A.—ind out which castmates were and weren't in attendance to see his debut

Mark Salling did it first, and now Cory Monteith is following suit.

No, we don't mean knocking up cheerleaders on Glee or anything like that.

Cory is making a musical effort off-camera. On Sunday, he did his very first performance with his band, Bonnie Dune, at the Roxy Theatre in L.A., where a bunch of his costars were there to support.

So who was and wasn't in the house?

Mark Salling, Chord Overstreet, Jenna Ushkowitz and Kevin McHale were all there from Glee, as was his Monte Carlo costar Selena Gomez.

"They were all incredibly nice and gracious," a source says of the stars.

But where was Cory's onscreen love interest, Lea Michele?

She had plans of her own that night with another Glee guy. Lea was spotted leaving the Pantages Theatre arm-in-arm with Chris Colfer after they saw the musical Hair.

Can't wait to see the whole cast hit the carpet together at the Golden Globes this weekend!