The Freddie Mercury composition was released on October 31, 1975, and went on to become the third biggest-selling single in UK chart history. It's been the subject of several affectionate spoofs, including the iconic scene in 1992 movie Wayne's World.

May tells the BBC: "I'm not sick of it. You can't complain that people want to talk about it all these years later. I still enjoy hearing it - if it comes on the radio I'll turn it up and listen. But no air guitar. I'm too old."