Dream Theater

The technically proficient guitar playing of John Petrucci elevated Dream Theater to the upper echelons of contemporary heavy metal. While its lineup has continuously evolved, the Long Island-based quintet has consistently delivered sharp-edged music. Dream Theater is known for its high-energy concert performances. While they've released several live albums -- Live at the Marquee, recorded at the London club; Live in Japan, recorded during the Music in Progress tour in 1993; and a triple CD and DVD, Live Scenes from New York -- they remain one of heavy metal's most bootlegged bands.