The Bonnaroo Music and Arts Festival  is an annual four-day music festival in Manchester, Tennessee, USA.  Main attractions of this festival are the multiple stages featuring live music with a diverse array of musical styles including indie rock, classic rock, world music, hip hop, jazz, americana, bluegrass, country music, folk, gospel, reggae, pop, electronica, and other alternative music.  Bonnaroo Music Festival was largely influenced by rock concerts of the late 1960s and early 1970s, as well as the massive Phish festivals of the late 1990s.  The festival was ranked in 2003 by Rolling Stone magazine as one of the “50 Moments That Changed Rock & Roll”.  (More from Wikipedia)