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Phil Harrell

In the 1970s, there were few singer-songwriters more beloved than Cat Stevens. A lot has changed since his landmark album Tea for the Tillerman. For one, he's a grandfather. For two, he's not even Cat Stevens anymore: He's gone by Yusuf Islam, or simply Yusuf, since his conversion to the Muslim faith later that decade.

On July 4, 1970, the countdown started. Originally hosted by Casey Kasem, American Top 40 played "the best selling and most-played songs from the Atlantic to the Pacific, from Canada to Mexico," as he stated on the first program broadcast 50 years ago as of tomorrow.

On any given week, American Top 40 could feature a ballad, next to a country song, next to a funk song, next to a rock song. The show became a national obsession but 50 years ago, it was considered a risky idea.

Morning Edition's series One-Hit Wonders / Second-Best Songs focuses on musicians or bands whose careers in the United States are defined by a single monster hit, and explains why their catalogs have much more to offer.

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Morning Edition's series called One-Hit Wonders / Second-Best Songs focuses on musicians or bands whose careers in the United States are defined by a single monster hit, and explai

It was the elephant in the room. Over 20 years after parodying NPR hosts in her recurring sketch, "The Delicious Dish," former Saturday Night Live cast member Ana Gasteyer sat down for an interview with NPR host Noel King.