Music's power players flocked to executive Clive Davis's annual pre-Grammy bash Feb. 9, where an all-star chorus posed for PEOPLE. From left: Carrie Underwood
, Rod Stewart, Slash, Nickelback's Chad Kroeger, Leona Lewis, Davis, Chris Brown, Chris Daughtry, Josh Groban, Whitney Houston, Alicia Keys, producer Mark Ronson, Pink, Dave Grohl, Andrea Bocelli, Fantasia and producer David Foster. Says Fantasia of Davis: "He's just gangsta. Straight up."