The song is the first track on their 1979 album Discovery. This was one of the band's most commercially successful singles, peaking at no. 4 in Canada, no. 6 in the UK Singles Chart and no. 8 in the US Billboard Hot 100. The song subsequently became one of their biggest worldwide hits as well. The 12" release was also available in white vinyl. Two different promotional videos were filmed for the single, a recording studio version shot on 35mm film, minus the band's three string players and a video-taped version made for the Discovery video album, featuring the full touring line-up.

The song was later sampled as a club remix by Lovefreekz and featured on their club hit "Shine". This version was featured in the episode "Okay Awesome" during season 1 of the TV show How I Met Your Mother.

In 2007, the Starlight Children's Foundation of Australia promoted their national Starlight Day on 4 May through television advertisements featuring this song.

The Norwegian comedy group band Prima Vera also used the 14-second long intro in their song "Den Sinte Festus", which also features the melody of the title song from the popular western series Bonanza.

"Jungle" is a song written by Jeff Lynne which first appeared as an album track from the 1977 album Out of the Blue. According to the band members' opinions, recording Jungle was a lot of fun owing to the various types of sound effects, the upbeat tune, and the jungle animal noises provided by Lynne, Bev Bevan, and Kelly Groucutt. Like most songs from the LP, the song starts with a fade in sequence by Tandy then continues in a different tune.

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