Love American Style

The sitcom premiered in 1969 and ran from 1969-1974. 108 episodes were made. It was a different show every week with different actors and actresses always having to do with relationships in one way or another. The actual first show of Happy Days was part of Love American Style and it is now considered to be the pilot episode. The first season the shows theme song was performed by the Cowsills. At the start of the second season the same song was sung by the Ron Hicklin Singers they were also the backing vocals for the Partridge Family.

From Wikipedia.

This second version of the theme was carried on for the remainder of the series, as well as on most episodes prepared for syndication. The title is loosely derived from a 1961 Italian comedy film called Divorzio all’italiana (Divorce, Italian Style), which received Academy Award nominations in 1962 for Best…