Miscellaneous
- "Ocean Breakup/King of the Universe" contains a sequence of morse code signaling ELO, something Jeff Lynne would also do 10 years later on "Secret Messages".
- "Showdown" was originally intended to be released on single only and, since it was on a different label (Harvest Records) than the UK LP, did not appear on the original UK LP. It was, however, included on the US LP.
- "Bluebird Is Dead" features a guitar solo played backwards.
- Although he didn't actually record on the album, Hugh McDowell did appear on this front cover of the US LP seen at right, which was an unusual photograph taken by famed photographer Richard Avedon that had ELO displaying their belly-buttons.
- In 2006, New Zealand rap group Frontline sampled a piece of "Dreaming of 4000" for their latest release "Hold 'em".
- The working titles for "In the Hall of the Mountain King" was "In the Hole of the Mounted Parrot", "Daybreaker" was "Theme from Glass Table" and "Dreaming of 4000" was "I'm Only Dreaming" and "Mambo".
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