The 9th annual Bonnaroo Music and Arts Festival concluded on Sunday night with a performance by Dave Matthews Band. The group expanded its horn section for a portion of its set with Matt Cappy and Lamont Caldwell sitting in on a number of tunes including “Shake Me Like a Monkey,” “Corn Bread,” “Too Much,” “Jimi Thing” and “Time Bomb.” In addition, Danny Barnes, who performed two sets earlier in the day at the Sonic Stage and Café Where, also appeared on “Spaceman,” “Corn Bread” and “Too Much,”

The day started with a main stage set from John Butler Trio, who performed at the very first Bonnaroo back in 2002. The band delivered a couple songs from the group’s new studio album, April Uprising and closed out their set with a collective percussion jam.

Elsewhere on site, Arizona-based Calexico invited the audience to come discuss the new Arizona legislation regarding illegal immigrants with them at the merch booth after their Which Stage set.

Kris Kristofferson performed a well-received solo acoustic set at That Tent. He acknowledged with some amusement that he was fighting the drums from Ween’s Which Stage set and later brought out Jamey Johnson who had preceded him. As for other sit-ins, Everest welcomed the Watson Twins during their performance (Everest lead singer Russell Pollard, is married to the folk duo’s Chandra Watson). In addition, the ubiquitous Beatle Bob attended the Medeski Martin & Wood set at The Other Tent and later joined the group on percussion.

The penultimate act on the main stage was Zac Brown Band, a group which like Friday headliner Kings of Leon has made the rounds at the festival, moving from a café tent in 2006 to a Thursday set last year at That Tent and finally to the festival’s main stage.

Speculation is already underway as to the 2011 Bonnaroo headliners. The 2010 Live from Bonnaroo recap will air on Fuse TV on June 17 at 7 PM ET.