On October 31, 1975, Queen released a six-minute suite with no chorus and six sections including an operatic section, a guitar solo, and a ballad.

Called Bohemian Rhapsody, it would go on to become the UK’s third best-selling single of all time but 40 years on, it is still one of the few songs guaranteed to get an entire crowd on their feet belting out the lyrics.

The song covers everything from nihilism to love to murder and then throws in a bit of devil imagery for good measure.

It has been Christmas number one twice, soundtracked a pivotal scene in Wayne's World, and sold 2.44 million copies in the UK alone.

Spawned from the band’s classic album A Night at the Opera, Bohemian Rhapsody is also the opening song on Queen’s Greatest Hits which, in February last year, became the first album to sell more than six million copies in the UK.

Written by frontman Freddie Mercury, Bohemian Rhapsody was painstakingly pieced together in six studios, pushing 1970s recording technology to its limits. The song's multi-tracked 'bismillahs' and 'scaramouches' were overdubbed so often that the tapes became virtually transparent.