When a station ran American Top 40, it was a glaring
example of how programmers ignored smash hits for either not testing well or simply the usual "the song doesn't fit our station's sound."

Here's one example. A New York City FM station was running American Top 40. Madonna's "Into the Groove" was a smash hit and the Djs wanted to play it.

The song was only heard when AT40 aired it. Someone inside the station decided the song didn't fit the station's sound as I mentioned before.