A 4-LP set, Music Box: 30th Anniversary Expanded Edition presents the original album Music Box in its entirety on Disc One with the noteworthy addition of "Everything Fades Away" (previously available only as an international bonus track). Discs Two and Three (just disc two on CD version) premiere a variety of previously unreleased tracks including "Workin' Hard,""All I Live For (Extended Version),""My Prayer,""Hero (2009 Version),""Anytime You Need A Friend (Extended Mix,") "Music Box (A Capella)"and two live performances from Top of the Pops: "Dreamlover"and "Without You." Disc Two also includes Mariah Carey's duet with Luther Vandross on "Endless Love"as well as two brand new remixes from Grammy Award nominated DJ Terry Hunter: "I've Been Thinking About You"and "Workin' Hard." Disc Four (disc three on CD version), "Mariah Carey Live at Proctor's Theater, NY - 1993" presents Mariah's complete showcase for the first time and features eight previously unreleased concert performances. (The Proctor's Theater performances of "Hero"and "Dreamlover"are the only two previously released tracks from the concert.)