His chart reign has flagged a bit in ’08, and artists as diverse as Britney Spears and Snoop Dog have shamelessly co-opted his auto-tuned style, but T-Pain’s status as hip-hop’s top hookman remains secure. His most memorable turns have been on other rappers’ songs, so tonight, expect an avalanche of surprise guests and, perhaps, a preview of his forthcoming 3 Rings, which is set to drop on his birthday in September. In a dying record industry, it’s perhaps upsetting that one of our biggest remaining stars impersonates a robot—so come, if only to verify that he’s human after all.

Wed., April 23, 8 p.m., 2008