Raised in Lake Charles, Louisiana, Parks spent his childhood studying clarinet, piano, and singing at the American Boychoir School in Princeton, New Jersey. He started his professional career as a child actor. During the 1950s, he worked steadily in movies and television, and in the early 1960s, he majored in music at the Carnegie Institute of Technology. After dropping out of university in 1963, he relocated to Los Angeles, where his first paid gig was arranging "The Bare Necessities" for the 1967 Disney film "The Jungle Book". Following this, he involved himself with the growing West Coast music scene, subsequently playing with—or appearing on records by—acts like the Mothers of Invention, the Byrds, Judy Collins, Paul Revere & the Raiders, and Harpers Bizarre. His LP "Song Cycle" mixed a number of genres (including bluegrass, ragtime, and show tunes) and framed classical styles in the context of 1960s pop music. It was released to underwhelming sales, but attracted a cult following in later years.