Moog synthesizer
After the release of "The In Sound From Way Out!", Perrey and Kingsley decided to release a second album as a follow up to their first studio album, "The In Sound from the Way Out". However the album was released a year later, Jean-Jacques Perrey and Gershon Kingsley they incorporated the Moog synthesizer, a huge and complicated electronic instrument that resembles an old style telephone switchboard. The Perrey's tape loops, and the effects were aggregates in post-production after Kingsley's orchestrations. The Moog synthesizer was implemented to the album after what Perrey and Robert Moog (the creator of Moog synthesizer), they became friends back then. Kingsley had also been inspired to use the Moog synthesizer after viewing some in action at a live New York Museum of Modern Art concert.