This CD symbolized the rock music of 70's. The accompanying album, A Night At The Opera (1975), became a bestseller and led the English charts while remaining in the top 5 of the USA. They made a stunning song, which kept the number one position in the British charts for nine weeks. On touring the Far East, the musicians escaped to the studio to record the masterpiece, Bohemian Rhapsody. In 1975, Queen experienced a grand breakthrough. By that time, Freddie Mercury had already been regarded one of the leading rock singers. The single Killer Queen was the first record by the band to have acclaim in the United States. Having toured long, they recorded the second album, Queen II, which saw them enter the British Top 5. After the unsuccessful single Keep Yourself Alive, in 1973 they released the first album named Queen, a noticeable combination of 70's glam rock and late 60's hard rock. In late 1972, Queen signed a contract with EMI Records and gave their first performance at the Marquee club in London the following spring. In early 1971, they were joined by bassist John Deacon and completed the lineup formation. Guitarist Brian May and drummer Roger Taylor used to play in Smile, in the beginning, and then started their own project with Freddie Mercury on vocals. The story of Queen, one of the most prominent rock bands ever, began in 1971.