By the early 1980s, Queen were one of the biggest stadium rock bands in the world.
"Another One Bites the Dust" (1980) became their best-selling single, while their 1981 compilation album Greatest Hits is the best-selling album in the UK and is certified eight times platinum in the US.
The single "Killer Queen" from Sheer Heart Attack reached number two on the British charts, It combines camp, vaudeville, and British music hall with May's guitar virtuosity.
The album's second single, "Now I'm Here", a more traditional hard rock composition, was a number eleven hit in Britain, while the high speed rocker "Stone Cold Crazy" featuring May's uptempo riffs is a precursor to speed metal.
In 1972, Queen entered discussions with Trident Studios after being spotted at De La Lane Studios by John Anthony.
After these discussions, Norman Sheffield offered the band a management deal under Neptune Productions, a subsidiary of Trident, to manage the band and enable them to use the facilities at Trident to record new material, whilst the management searched for a record label to sign Queen.
The latter featured "Bohemian Rhapsody", which stayed at number one in the UK for nine weeks and also helped to popularise the music video.
Their classic line-up was Freddie Mercury (lead vocals, piano), Brian May (lead guitar, vocals), Roger Taylor (drums, vocals), and John Deacon (bass guitar).
Their performance at the 1985 Live Aid concert has been ranked among the greatest in rock history by various music publications.
The last concert featuring their classic line up–the final live performance of Mercury–took place at Knebworth, England in August 1986.
In 1970, after Staffell left to join the band Humpy Bong, the remaining Smile members, encouraged by Bulsara, changed their name to "Queen" and performed their first gig on 18 July.
The band had a number of bass players during this period who did not fit with the band's chemistry.