During the late 1960s, Parks became one of the first owners of a prototype Moog synthesizer and recorded a number of experimental advertising jingles for various companies such as Datsun and the Ice Capades. Parks plays the Moog on the Biff Rose song "Ain't No Great Day", from Rose's second LP, "Children of Light". Parks was also instrumental in the genesis of the 1970 album "In a Wild Sanctuary", by the electronic outfit Beaver & Krause. While having lunch with the duo, Parks suggested that they record an ecological concept album through the use of field recordings and synthesizers. Parks and Randy Newman helped the duo get signed to the Warner Bros. label.