Will Eminem sweep? Will Christina rebound from last week's Super Bowl disaster? And will Britney perform live after all? We know this much: Bob Dylan, Mick Jagger and Lady Gaga will perform at one of the more exciting Grammy ceremonies in recent history. Hear Rob Sheffield marvel at it all — and join in on the conversation! — as he live-blogs the 2011 Grammy Awards on Sunday, February 13th. The festivities start at 7:30 p.m. EST and kick into high gear as the ceremony kicks off at 8:00 p.m. EST.