 The debut album by Steppenwolf was recorded there and was released in January 1968.Because The Beatles did not gain access to eight-track recorders until 1968, their groundbreaking "Sgt Pepper's Lonely Hearts Club Band" LP (1967) was created using pairs of four-track machines; the group also used vari-speed (also called pitch shift) to achieve unique sounds, and they were the first group in the world to use an important offshoot of multitrack recording, the Automatic Double Tracking (ADT) system invented by Abbey Road staff engineer Ken Townsend in 1966.Other artists began experimenting with multitrack's possibilities also, with The Music Machine (of "Talk Talk" fame) recording on a custom-built ten-track setup, and Pink Floyd collaborating with former Beatles recording engineer Norman "Hurricane" Smith, who produced their first albums.