"I feel like a f***ing caged panther," Courtney Love told Spinner. "I just want to get out and rock. I'm just so antsy about it. I can't eat, I can't sleep -- I need to play."

Last night, play she did.

"We have a special guest coming up in a few songs," Linda Perry said during her set last at L.A's House of Blues, and the crowd responded with overwhelming enthusiasm. "You're actlng like you know who it is," she joked.

They did and they were eager. Perry teased a little more, talking up a "new artist I think is kind of cool." And in entered Courtney Love.

She opened her four-song set with the title track from her forthcoming new album, 'Nobody's Daughter.' "We made this great record," Love said. "I think [it] is the best thing I've ever done." She then launchced into 'Sunset Marquis' and 'Pacific Coast Highway,' in an impassioned performance that found the crowd singing along by the end -- no small feat for a new tune.

With that, skeptics were hush and Love was officially uncaged.