"Magic" by Olivia Newton-John, is from the soundtrack to the film Xanadu. The song was number 1 on the U.S. Billboard Hot 100 for four weeks beginning on August 2, 1980.
https://en.wikipedia.org/wiki/Magic_(Olivia_Newton-John_song)
https://en.wikipedia.org/wiki/Xanadu_(soundtrack)
https://en.wikipedia.org/wiki/Olivia_Newton-John
https://en.wikipedia.org/wiki/Magic_(Olivia_Newton-John_song)
https://en.wikipedia.org/wiki/Xanadu_(soundtrack)
https://en.wikipedia.org/wiki/Olivia_Newton-John
Text to this post, obtained from this song's Wikipedia page, has been slightly modified and made available here under the Creative Commons Attribution-ShareAlike 3.0 Unported License. (CC BY-SA 3.0)
https://creativecommons.org/licenses/by-sa/3.0/