The Fifth Dimension, also known as The 5th Dimension, is an American popular music vocal group, whose repertoire also includes pop, R&B, soul, and jazz.\r \r The Fifth Dimension were best-known during the late 1960s and early 1970s for popularizing the hits "Up, Up and Away" and "Aquarius/Let the Sunshine In."\r \r The five original members were Billy Davis, Jr., Florence LaRue, Marilyn McCoo, Lamonte McLemore, and Ron Townson. They have recorded for several different labels over their long careers. Their first work appeared on the Soul City label, which was started by Imperial Records/United Artists Records recording artist Johnny Rivers. The group would later record for Bell/Arista Records ABC Records and Motown Records.\r \r