Kaleidoscope was an English psychedelic and progressive rock band that existed from 1967 to 1969. Having previously performed under the name The Sidekicks since 1964, they changed their name to The Key in November 1965, before finally settling on the name Kaleidoscope when they signed a record deal in January 1967 with Fontana Records, who recognised the band’s melodic potential. The London-based band consisted of singer Peter Daltrey, who also played various keyboard instruments, guitarist Eddie Pumer, Steve Clark on bass and flute, and drummer Danny Bridgman.

The recording sessions for their debut album at Philips Studios took place over an extended period, from 24. February to 8. September 1967. Impeccably produced by Dick Leahy and featuring rich instrumentation (including harpsichord and bells), carefully crafted down to the smallest detail, the album combines pop, rock and folk ballads with strong psychedelic influences. Tangerine Dream was released at the end of November exclusively in England, in both stereo and mono. Despite support from the public and radio stations, as well as critical acclaim, the album sold only slowly. Nevertheless, they recorded their follow-up album, Faintly Blowing, the following year. As their debut album sold in only small numbers, this globally sought-after masterpiece of British psychedelic pop is incredibly rare today.