Hungarian Dances
From Memory Alpha, the free Star Trek reference
The Hungarian Dances are a set of classical music pieces by Johannes Brahms, published in the mid-19th century, featuring elements from Hungarian folk music.
In 2366 Geordi La Forge's "Moonlight on the Beach" holoprogram featured a gypsy violinist playing Brahms Hungarian Dance No. 5. (TNG: "Booby Trap")
