'Calling occupants of Interplanetary Craft' by The Carpenters. I've always been really surprised that such a talented pair committed this ghastly, toe-curling effort to vinyl.
What about the original by Klaatu - 'Calling Occupants'
This was rumoured to be a Beatles reunion song at the time.
It is the anthem of World Contact Day, apparently.
Klaatu are a Canadian prog rock group.
And the song is based on real events from 1953.
Klaatu is also the name of the main character from ''The Day the Earth Stood Still'.