Found the following tidbit at
http://njmg.typepad.com/inauguration2009/2009/01/rocking-marching-and-dancing.html


Rocking, marching and dancing

The Dead, which includes the surviving members of Grateful Dead and new friends, opened with four songs (''Dancing in the Streets,'' ''Uncle John's Band,'' ''Sugar Magnolia,'' and ''Eyes of the World'') before breaking around 10 p.m. ''There's a very important gentleman who has a schedule to keep,'' guitarist Bob Weir said, sending the crowd closer to the stage, video cameras cocked and ready. Then they sound system played Sousa's Stars and Stripes Forever. Twice. Then two more Sousa marches. Chants of ''Obama'' went up but after 20 minutes, Vice President Joe Biden came out. ''Today you witnessed history,'' Biden said to loud cheers. ''And tomorrow, it's the intent of Barack and I to make history.'' After a short speech, he and wife Jill danced to Van Morrison's ''Have I Told You Lately That I Love You.'' Then they left the stage. And Sousa resumed.