Six Degrees of Inner Turbulence by Dream Theater

Six Degrees of Inner Turbulence, Dream Theater's sixth studio album, came out on Elektra on January 29, 2002, as a sprawling double-disc set, and nobody accused these guys of doing things by halves. Mike Portnoy and John Petrucci produced it themselves, with James LaBrie singing, John Myung on bass and Jordan Rudess on keyboards, and for once there's a song named after the album, a first for a full-length Dream Theater record.

It's prog metal at its most maximal, all knotted riffs, shifting tempos and guitar and keyboard runs flying at breakneck speed, and "The Glass Prison" is the heavy-hitting showcase. The Astonishing aside, it's the longest studio album the band has made. It entered the Billboard 200 at number 46.

Written with AI assistance from RockLists chart data, MusicBrainz and Wikipedia.