Who sang the theme song from the 70's movie 'Love Story'?

Love Story is a 1970 American romantic drama film written by Erich Segal, who was also the author of the best-selling novel of the same name. It was directed by Arthur Hiller and starred Ali MacGraw and Ryan O'Neal, alongside John Marley, Ray Milland, and Tommy Lee Jones in his film debut in a minor role.

The main song in the film, "(Where Do I Begin?) Love Story" was a major success, particularly the vocal rendition recorded by Andy Williams.

Howard Andrew "Andy" Williams (December 3, 1927 – September 25, 2012) was an American popular music singer. He recorded 44 albums in his career, 15 of which have been gold-certified and three of which have been platinum-certified. He was also nominated for six Grammy Awards. He hosted The Andy Williams Show, a television variety show, from 1962 to 1971, and numerous TV specials. The Andy Williams Show garnered three Emmy awards