While this is from November 2015, this light-hearted article by Pia de Jong is still worth reading.
This month marks the 100th anniversary of Albert Einstein’s theory of general relativity. Amid all the celebrations and conferences, it is easy to forget about the real human being who actually did it. But if you live in Princeton, and his piano is in your living room, he is always present.
Everyone thinks of Einstein musically as a violinist. At six, he took lessons and proved to be a talented pupil. After he became famous, he willingly gave benefit concerts on the best stages in the world. He sometimes said that if he had not chosen scholarship, he would have become a musician.
His love for music was nurtured from the cradle. His mother Pauline was a pianist and brought music into his family. On his violin he played solely the work of others — preferably Mozart, Bach, Corelli and Schubert. His musical mentors stopped somewhere in the mid-nineteenth century.
But while playing the piano, he was daydreaming. There are many stories about Einstein, and who knows which are true. But one of them is that while improvising at his piano, he daydreamed about his relativity theory. Music and mathematics came from the same wellspring in his brain.