Many of the bonus tracks have originally appeared as B-sides and extra tracks on various single releases (although the selection was not exhaustive). A selection of cover versions, recorded by Eurythmics for the aborted "TV Planet" project, are also included.

Boxed features all eight studio albums originally released by RCA Records remastered and expanded.
The following albums are included in Boxed:

The EP Touch Dance (exclusively consisting of remixes from 1983's Touch album), the soundtrack album 1984 (For the Love of Big Brother) (released through Virgin Records – now an EMI sublabel – rather than BMG/RCA), and the live album Live 1983-1989 are not included in the set.

Each expanded release includes a selection of b-sides, and/or remixes, and/or live tracks. Also scattered across seven of the eight expanded releases are a selection of seven cover songs from a never-realized project called TV Planet. Announced in early 1986,TV Planet was to have been an animated television show which took place on a world that had forgotten about music; the lead characters would re-introduce music to this world. The show never got past the planning stages.

While the recording dates of the TV Planet cover songs are not detailed anywhere in the package, they would appear to date from anywhere between 1983 and 1988, or later. "Satellite Of Love" initially made its appearance on a cassette-only compilation of Eurythmics rarities in late 1983, and at least one track, "Last Night I Dreamt That Somebody Loved Me", could not have been recorded any earlier than late 1987, as the original recording by The Smiths was issued in September of that year.

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