In 1973, KPFA Berkeley, California radio producers Anna Turner and Stephen Hill used the phrase in the title of their local public radio show Music from the Hearts of Space. They developed an innovative segue music assembly technique, cross-mixing "spacey" instrumental pieces to create a sustained mood. The term began to be used more widely when the show was syndicated nationally in 1983. Other US-based radio programmers adopted the term as well, among them, John Diliberto, Steve Pross, and Gino Wong with Star's End, launched in 1976, Frank J. Forest (a.k.a. "Forest") with Musical Starstreams, launched in 1981 and nationally syndicated in 1983, and John Diliberto again with Echoes, launched in 1989.