Happy_days_theme_song

A final, more "contemporary" version of the theme was introduced for the show's farewell season. The Songwriters and Singers

The show did not originally open with the song "Happy Days." Instead, it relied on a 1950s rock-and-roll classic to set the mood. happy_days_theme_song

The opening theme was "Rock Around the Clock" by Bill Haley & His Comets. This choice was inspired by the song's successful use in the 1973 film American Graffiti , which also starred Ron Howard. A final, more "contemporary" version of the theme