Variations on a Theme of Paganini, Opus 35 was a piece of Earth music composed by Johannes Brahms.
In 2367, Geordi La Forge wanted to impress Doctor Leah Brahms, who was about to visit him in his quarters, and decided to play the Variations on a Theme of Paganini (book 2, variation 13, calling it a Brahms piano etude), but changed his mind because he thought the idea was too corny. (TNG: "Galaxy's Child")