Eric Woolfson hated "Lucifer", despite the fact that the instrumental song reached #1 in Germany.
Parsons with the unreleased The Sicilian Defense, which was more or less a throwaway instrumental album that was intended to force their label's hand in an attempt to renegotiate their contract. While Parson's feelings toward The Sicilian Defense have softened after its release on The Complete Albums Collection, he still maintains that the material falls short in comparison to their other works.
Executive Meddling: Eric Woolfson's growing prominence as a lead vocalist resulted from this. Parsons didn't like using him as a lead vocalist as he was not a trained singer, but the record company were quick to notice that whenever he sang lead, the song was a hit...and so insisted he sing on more tracks.
Hipgnosis: Did the cover art for the first five albums.
Missing Episode: The Sicilian Defense, an all-instrumental, atonal album the band recorded entirely for the purpose of getting out of their recording contract. After they submitted the album, they successfully renegotiated their contract. The album was not released, though one song was released as a bonus track to a reissue of Eve in 2008. In 2014, Parsons relented and it was released as a bonus CD for The Complete Albums Collection.