Neil Diamond thought he had written a simple pop song.
There was nothing about “Song Sung Blue” that suggested a classical masterpiece was hiding underneath it. The melody was gentle, the lyrics were deliberately uncomplicated, and Diamond wasn’t trying to prove anything with the song. He had simply followed an idea that came naturally.
Then, about a year after writing it, he heard something that stopped him.
The melody sounded like Mozart.
Diamond later recalled the strange moment in interviews, explaining that he didn’t realize the connection when he originally wrote the song. It was only the following year, when he heard it again, that the pieces suddenly came together. As he put it, he essentially realized, wait—this is Mozart’s melody, not one I invented myself.
The piece he recognized was the second movement of Mozart’s Piano Concerto No. 21, a work composed in the 18th century. More specifically, the wistful melody of Mozart’s Andante had found its way into Diamond’s 1972 song without him consciously setting out to reproduce it.
That made the story far more fascinating than a simple case of musical inspiration.
Diamond had actually studied classical music as a young man. He once explained that seeing another student playing music at a high-school assembly had inspired him to shift his attention from guitar toward piano and classical study. He said he spent nearly two years studying the classics, fascinated by the enormous range of music around him.
So perhaps Mozart had been sitting somewhere in the back of his musical memory all along.
Diamond didn’t consciously sit down and say, I’m going to take Mozart’s melody and turn it into a pop song. The connection emerged much more mysteriously. Something he had heard and absorbed years earlier may have resurfaced when he was creating his own music.
And the strange part was what happened next.
“Song Sung Blue” wasn’t buried in an obscure album. Released in 1972 as the lead single from Moods, it became one of Diamond’s biggest successes. The song reached No. 1 on the Billboard Hot 100, giving him his second chart-topping single in the United States.
That meant millions of people were hearing a melody with a connection to Mozart—without most of them having any idea.
For Diamond, however, the discovery must have been particularly humbling. He had spent years building his reputation as a songwriter, learning how melodies worked and developing a voice of his own. Yet here was one of his biggest songs containing a musical idea that had existed for nearly two centuries.
He didn’t hide from the coincidence.
Instead, he seemed amused by it.
The story also says something revealing about songwriting itself. A melody can live inside a musician’s memory for years without being consciously remembered. Music heard during childhood, lessons, records, performances and study can become part of an artist’s instincts. Sometimes, when a songwriter sits down at a piano, those influences may emerge without an obvious explanation.
Diamond had believed he was simply writing a Neil Diamond song.
A year later, he realized Mozart had quietly been there too.
And perhaps the strangest part of the story is that neither the enormous hit nor the classical connection was planned. One of Diamond’s most recognizable melodies began as something he thought he had created entirely on his own—until history reached across nearly two centuries and reminded him otherwise.