Billy Crystal is, of course, a comedian and actor rather than a recording artist, but he belongs on this list for one beloved soundtrack duet. Voicing Mike Wazowski in Pixar's Monsters, Inc., he performed "If I Didn't Have You" with co-star John Goodman, a playful, big-hearted song written by Randy Newman that won the Academy Award for Best Original Song.
It is the only recording most listeners associate with Crystal, and nothing else under his name comes close.
On streaming, "If I Didn't Have You" sits near 49 million plays, while his next most-streamed track trails at well under one million. That sends the ratio above 130, one of the most extreme figures in our entire database.
By our measure Billy Crystal is a certified one-hit wonder, with the obvious caveat that music was never his profession. His catalogue, on the numbers, is essentially one charming Pixar duet, an Oscar-winning film song that has stayed beloved by families for decades, standing now almost completely alone above everything else credited to him. It is a fitting one-off for a beloved entertainer: not a pop career, but a single warm, funny duet that generations of children have grown up singing.