Vocal arranger and singer Randy Van Horne, who sang with his ensemble on “The Flintstones” theme song, died Sept. 26 in Woodland Hills, Calif. He was 83.

A memorial service will be held Oct. 4 at 2 p.m. at the Motion Picture and Television Fund Country House, 23388 Mulholland Dr., Woodland Hills.

Born in El Paso, Texas, Van Horne started singing while attending Texas Western College.

Moving to Hollywood, he formed the Encores, which toured with big band leader Billy May. In the 1950s, he assembled the Randy Van Horne singers, who were signed by RCA Victor and later MGM. They sang on albums with Dean Martin, Mel Torme and Juan Garcia Esquivel, contributing to the era’s jazzy, genre-bending music that has come to be known as space-age pop. The singers also earned a regular slot on “The Nat King Cole Show.”

In the early 60s, Hanna-Barbera’s music composer Hoyt Curtin hired the ensemble to sing the theme to “The Flintstones,” the “Jetsons” and several other cartoons. Van Horne then moved into arranging and composing commercials and working as a TV commercial announcer. He continued performing with his own big bands.

He is survived by his girlfriend Jean Cochrane and a son.