Queen are a British rock band formed in London in 1971, originally consisting of Freddie Mercury (lead vocals, piano), Brian May (guitar, vocals), John Deacon (bass guitar, guitars, vocals), and Roger Taylor (drums, vocals). Queen's earliest works were influenced by progressive rock, but the band gradually ventured into more conventional and radio-friendly works, incorporating more diverse and innovative styles in their music.
Before joining Queen, Brian May and Roger Taylor had been playing together in a band named Smile with bassist Tim Staffell. Freddie Mercury (then known as Farrokh/Freddie Bulsara) was a fan of Smile, and encouraged them to experiment with more elaborate stage and recording techniques after Staffell's departure in 1970. Mercury himself joined the band shortly thereafter, changed the name of the band to 'Queen', and adopted his familiar stage name. John Deacon was recruited prior to recording their eponymous debut album (1973). Queen enjoyed success in the UK with their debut and its follow-up, Queen II (1974), but it was the release of Sheer Heart Attack (1974) and A Night at the Opera (1975) that gained the band international success. The latter featured