T. Rex were an English rock band, formed in 1967 by singer-songwriter and guitarist Marc Bolan. The band was initially called Tyrannosaurus Rex, and released four psychedelic folk albums under this name. In 1969, Bolan began to change the band's style towards electric rock, and shortened their name to T. Rex the following year. This development culminated in 1970's "Ride a White Swan", and the group soon became pioneers of the glam rock movement. 　　From 1970 to 1973, T. Rex encountered a popularity in the UK comparable to that of the Beatles, with a run of eleven singles in the UK top ten. They scored four UK number one hits, "Hot Love", "Get It On", "Telegram Sam" and "Metal Guru". The band's 1971 album Electric Warrior received critical acclaim as a pioneering glam rock album. It reached number 1 in the UK. The 1972 follow-up, The Slider, entered the top 20 in the US. Following the release of "20th Century Boy" in 1973, which reached number three in the UK, T. Rex's appeal began to wane, though they continued releasing one album per year. 　　In 1977, founder, songwriter and sole constant member Bolan died in a car crash several months after the release of the group's final studio album Dandy in the Underworld, and the group disbanded. T. Rex have continued to influence on a variety of subsequent artists.