'TSOP,' 1974 No. 1 Hit Song, Became First TV Theme to Top Billboard

In 1974, "TSOP (The Sound of Philadelphia)" became the first TV theme song to Hit No. 1 on the Billboard Hot 100—and it was recorded by a supersized studio house band. Performed ...
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From stock music to comedic gold: The story of the ‘It’s Always Sunny in Philadelphia’ theme song

Part of the undeniable charm of "It’s Always Sunny in Philadelphia," even after 20 years on television, lies in its whimsical soundtrack — the satisfying irony of hearing rather pleasant tunes while ...