 Reed and Cale (who would play viola, keyboards and bass) began to collaborate and investigate the connections between ostrich tuning and drone music, as the band introduced new members (such as guitarist Sterling Morrison and percussionist Angus MacLise, another student of La Monte Young) and they became known as the Velvet Underground.Cale had composed and recorded "Loop" in 1964, but which became the first EP released under this band name, composed of drones played on an electric viola, and the combination of both Cale's viola and Reed's guitar tunings would be an early hallmark of their work.Reed used ostrich tunings on the 1967 album "The Velvet Underground & Nico" on the songs "Venus in Furs" (appearing at the end of the song) and "All Tomorrow's Parties", which also included Cale playing drones on viola.