We probably all know how much trouble Queen went to in making Bohemian Rhapsody, given the recent massively successful movie of the same name. However, lest we forget, there was another absolutely amazing song by another incredible British band earlier that very same year, 1975. The song made extensive use of taped and overdubbed vocals. This was before the digital age. They say lightning never strikes twice - it did in 1975!
https://youtu.be/3oxe4mlsQos