T. Rextasy: The Best Of T. Rex, 1970–1973 is a North America-only compilation released by Warner Bros. Records in September 1985. Issued in the United States and Canada, the album was designed as an introduction to T. Rex's most commercially successful years, collecting key recordings released between 1970 and 1973. The compilation focuses on the band's breakthrough and glam rock period, tracing the development from "Ride A White Swan" through to "20th Century Boy". RECORDING