"Calling Occupants of Interplanetary Craft (The Recognized Anthem of World Contact Day)" is a song by Klaatu, originally released in 1976 on their first album 3:47 EST. The following year, The Carpenters covered the song, using a crew of 160 musicians. Both versions of the single had the entire name of the song on the label (the picture sleeve of the Carpenters' single had the subtitle in small print); reissued singles of the Klaatu version had the title shortened to "Calling Occupants."
John Woloschuk, a member of Klaatu and one of the song's composers, has said:
While this is probably the most recognized recording by Klaatu, the band went on to release five studio albums of progressive pop music.
The Carpenters' version is probably even better known, as it was indeed the bigger hit, charting worldwide and appearing on several of their (mostly hits collections) albums. The success of their version led to the duo receiving many letters from people asking when World Contact Day would be held.
While Klaatu's original opens with various sounds of living species, the Carpenters' version opens with a radio DJ on a request show. The DJ identifies his caller as "Mike Ledgerwood." As the...