T. Rex were a British rock band, formed in 1967 by singer/songwriter and guitarist Marc Bolan. The band formed as Tyrannosaurus Rex, releasing four folk albums under the name. Tony Visconti (their producer for several albums) claimed in a documentary on the band that he had taken to using the abbreviated term 'T.Rex' as a shorthand, something which initially irritated Bolan, who gradually came around to the idea and officially shortened the band's name to "T.Rex" at roughly the same time they started having big hits (shortly after going electric).
In the 1970s, the band had reached success with glam rock hits like "Jeepster", "Get It On", "Ride a White Swan", "20th Century Boy", "Children of the Revolution", "Hot Love", "Telegram Sam", and "Metal Guru".
After earning success in the early and mid-1970s, the band broke up after Bolan was killed in a 1977 car accident.