Lindsey Stirling - Carol of the Bells Video Wiki
"Carol of the Bells" is a popular Christmas carol, with music by Ukrainian composer Mykola Leontovych in 1914 and lyrics by Peter J. Wilhousky. The song is based on the Ukrainian folk chant "Shchedryk". Wilhousky's lyrics are under copyright protection (owned by Carl Fischer Music); the music is in the public domain.
The music is based on a four-note ostinato. It has been performed in many genres: classical, metal, jazz, country music, rock, and pop. The piece has also been featured in films, television shows, and parodies..