The classic album has been mixed for 5.1 Surround Sound from the original studio masters by Steven Wilson (Porcupine Tree) & is fully approved by Crimson founder Robert Fripp. CD features a new stereo mix by Robert Fripp & Steven Wilson, 3 extra tracks, 2 previously unreleased, including a new mix of Groon, alternate mix of Peace: An End, & the 1st time availability on CD of the studio recording of Cadence & Cascade with Greg Lake"s guide vocal. DVD-A features a 5.1 DTS Mix and High Resolution Stereo mixes, 5.1 lossless audio mix and Lossless Stereo mixes,the original & new album mix & more.