Klaatu (/ˈklɑːtuː/) was a Canadian rock group formed in 1973 by the duo of John Woloschuk and Dee Long. They named themselves after an alien who visits Earth in the film The Day the Earth Stood Still. After recording two non-charting singles, drummer Terry Draper was added to the line-up; this trio would constitute Klaatu throughout the rest of the band's recording career.
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). In the U.S. "Calling Occupants" backed with "Sub-Rosa Subway" was a minor double-sided hit and their only chart entry, peaking at No. 62 in 1977.
Internationally, the group's pop-influenced blend of rock styles has led to them being known as the "Canadian Beatles".