Earle Harry Hagen was an American composer who created music for films and television. His best-known TV themes include The Dick Van Dyke Show, I Spy, That Girl and The Mod Squad. He is also remembered for composing and whistling the theme to The Andy Griffith Show; writing the instrumental song "Harlem Nocturne" used as the theme for television's Mickey Spillane's Mike Hammer; and co-writing the theme song to Tim Conway's Western comedy Rango.

The Dick Van Dyke Show is an American sitcom created by Carl Reiner that initially aired on CBS from October 3, 1961, to June 1, 1966, with a total of 158 half-hour episodes spanning five seasons. It was produced by Calvada Productions in association with the CBS Television Network, and was shot at Desilu Studios. Other producers included Bill Persky and Sam Denoff. The music for the show's theme song was written by Earle Hagen.