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. Almost 90 minutes of bonus material mostly unreleased including a full "Alternate Album", rehearsal takes, live material, studio sessions & material mixed for the first time for this release.DVD-A (compatible with all DVD players & DVD Rom players) features a 5.1 DTS Mix and High Resolution Stereo mixes (24bit/48khz), and features both the original album mix & the new album mix in High Resolution stereo.