20 in the UK Charts[2] and is notable for its early use of the EMS Synthi 100 synthesizer to process lead singer Sonja Kristina's voice on the second side.

Allmusic called Phantasmagoria "the culmination of all that Curved Air promised over the course of its predecessors" and "the band's grandest hour by far".

Their review praised the vast majority of the individual tracks, especially complimenting the blending of musical styles and absence of pretentiousness.

[1] Side One Side Two One other track was recorded and released as a single, with "Phantasmagoria" on the b-side: Canto IV--Hys Nouryture "Oh, when I was a little Ghost, A merry time had we!

Each seated on his favourite post, We chumped and chawed the buttered toast They gave us for our tea."