For a band characterized by their fusion of bluegrass, country, and down and dirty punk rock, Nashville's Ryman Auditorium -- former home to the Grand Ole Opry and hallowed ground for country music -- is both a perfect fit and an unlikely proving ground for the Avett Brothers.

Deafening applause filled the air as the Ben Folds Five appeared together onstage for the first time in nearly a decade Thursday night to perform their final album, 1999's The Unauthorized Biography of Reinhold Messner, in its entirety in their hometown of Chapel Hill, North Carolina.

Who? Formed in Reykjavik, Iceland in 1994, Sigur Ros released one critically acclaimed album (along with an LP of remixes the following year) in their homeland before going international with the release of Ágætis Byrjun in 1999, which quickly catapulted them onto the radar of American and European music fans.

Broken Social Scene got an early start Sunday, appearing at Bonnaroo's tiny Solar Stage for a quick, half-hour prequel to their proper set later that evening.

As anxious fans squeezed their way to the front of That Tent in the early A.M. hours Sunday, Sigur Rós appeared under eerie blue lighting and enormous illuminated hanging balloons to deliver two hours of epic musical ecstasy, leaving everyone in the crowd speechless and, quite literally, waiting for more.

Jakob Dylan and the Gold Mountain Rebels, which includes Nashville-based guitarist Audley Freed and drummer Fred Eltringham, appeared during the height of Sunday's heat wave and attempted to cool things down at Bonnaroo's This Tent.