Jazz Fest is, of course, a celebration of jazz. But it’s also a celebration of the many musical forms that have flowed from jazz, as well as the intersection of those new forms with the older styles that preceded them. This intersection was on full display this past Saturday night, when Grammy and Academy Award-winning rapper Common made a surprise appearance with the Robert Glasper Rotation Trio in New Orleans during Jazz Fest at Ace Hotel New Orleans’ Three Keys music venue.After joining the band for a brief collaboration during their first set, Common teamed up with the Robert Glasper Rotation Trio for an impromptu, hour-long second set. The rapper opted to make his second stanza free to the public, and the venue even opened its doors to the Ace Hotel lobby to allow additional fans and unsuspecting spectators to take in the music. Jazz Fest will continue this Thursday, May 3rd to Sunday, May 6th.Robert Glasper Rotation Trio feat. Common[Video: Three Keys]Live for Live Music will also be in New Orleans for Jazz Fest, where we’ll be putting on a series of after shows and daze between shows at clubs across town. You can check out our late night guide for a comprehensive list of what New Orleans has to offer during Jazz Fest, and you can take a look at our own late night calendar below.