The Mars Volta must be a pretty great progressive rock band, because they have been selected as the number one most popular ACL act for Friday by our Do512 users. The Long Beach, Calif.-based eight-piece creates songs that explode with creativity, fusing jazz riffs, tribal rhythms, hardcore bursts of noise, and addictive rock hooks that are something truly original. Their live performances are reportedly epic, with a jaw-dropping set that you won't forget.