Queen defied convention in the most audacious ways imaginable. Together, Freddie Mercury, Brian May, Roger Taylor and John Deacon were one of the biggest acts of the '70s thanks to their mash-up of metallic guitar crunch and art-pop flair topped off with Mercury's singularly spectacular voice. It's an aesthetic that was crowned in 1975 by the ingeniously constructed micro-symphony “Bohemian Rhapsody.” With a voracious appetite for new sounds, Queen would go on to ingest nearly every pop trend under the sun: Strutting disco beats, robotic synth-pop and retro-rockabilly all found their way into their fabulously indelible style.