 They had employed tape loops, sound effects, found sounds and the principles of musique concrete on their debut album "The Piper at the Gates of Dawn" from that same year.Other fans of the Radiophonic Workshop included The Rolling Stones' Brian Jones – who visited in 1968 – and Roger Mayer, who supplied guitar pedals to Jeff Beck, Jimmy Page and Jimi Hendrix.Phil Manzanera has also cited the Workshop as an influence on the sound of his group Roxy Music.