In Canada, the band is remembered for several hits, including "California Jam" (1974), "Calling Occupants of Interplanetary Craft" (1976) and "Knee Deep in Love" (1980).

Their first album, 3:47 EST (named Klaatu in the US as Capitol Records' executives found the original title too obscure), was released in September 1976, in North America.

The band elected to include no photos, no individual musician credits, and no biographical information in the album package; all songs were simply listed as being written and published by "Klaatu."

But then, in 1977 an article published in the Providence Journal written by journalist Steve Smith, speculated that 3:47 EST could actually be a release by a secretly reunited Beatles recording under a pseudonym, leading to widespread rumours.

[10] These rumours were fueled by a number of factors, including the fact that their album was released by Capitol Records (also the Beatles' label in North America), the lack of artist and producer credits or photographs in the album packaging, Klaatu's avoidance of public performances, and the fact that the group's vocal and musical style was reminiscent of the Beatles.

Subsequent to the Beatles rumour, the songs "Sub-Rosa Subway" and "Calling Occupants of Interplanetary Craft" became minor hits for Klaatu in 1977.

[16] This video ran on Don Kirshner's Rock Concert and subsequently played as a short in Los Angeles on the same bill as Animal House.

Although forced by Capitol to record Endangered Species in Los Angeles using established studio musicians to shore up the group's commercial chances, Klaatu continued to refuse to perform live.

Klaatu was eventually signed by Capitol's Canadian division, EMI Canada, and released their final album, Magentalane, in 1981.

From November 1981, the group expanded to a sextet, enlisting Gary McCracken (drums), Mike Gingrich (bass) and Gerald O'Brien (keyboards) for live performances.

Although Woloschuk and Draper carried on performing for a few more months - with Terry Watkinson replacing a departing O'Brien and Marty Morin taking McCracken's chair - Klaatu officially disbanded in August of the same year.

The trio very briefly reunited in 1988 at George Martin's AIR Studios in London with John Jones to record a single, "Woman", though no one was particularly happy with the results as the song was written by someone outside of the band (Paul Vincent Gunia) for the German TV series Tatort.

The single was released only in West Germany and did not chart, making it an extremely rare item in the Klaatu catalogue; Draper confirmed that the song was considered for a few rarities compilations, but all three band members had agreed to not include the track.

[19] The set list consisted of "At the End of the Rainbow," "I Don't Wanna Go Home," "Cherie," "Magentalane," "All Good Things", and "Little Neutrino".

In 2005, Bullseye Records released a two-CD collection entitled Sun Set, which compiled a number of rarities, demos, rare early singles, and the original version of Hope which had been delivered to Capitol Records, including the complete contributions made by the London Symphony Orchestra, which had largely been removed from the original mix.