"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". The music is in the public domain, Wilhousky's lyrics are however under copyright protection (owned by Carl Fischer Music). The music is based on a four-note ostinato and is in 34 time signature, with the B-flat bell pealing in 68 time. The carol is metrically bistable, and a listener can focus on either measure or switch between them. It has been adapted for many genres, including: classical, metal, jazz, country music, rock, trap, and pop. The piece also features in films, television shows, and parodies.
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