I haven't listened to my DCD-A or CD-4 LP of BDB in a while, but from what I remember the mixes were similar, but the versions were not. Like Chicago's 2 titles, The DVD-A uses the stereo version to mix from. The CD-4 is a totally unique version of the album, different lyrics, alternate take, and an unfaded song from what I remember. Any big Cooper fans out there, you owe it to yourself to get a copy of the CD-4 LP or Q8. I can't compare Muscle of Love Stereo to Quad, don't have it in CD-4 or Q8. Yet.