The Hungarian Dances (German: Ungarische Tänze) by Johannes Brahms (WoO 1), are a set of 21 lively dance tunes based mostly on Hungarian themes, completed in 1879.[1] They vary from about a minute to five minutes in length. They are among Brahms's most popular works and were the most profitable for him. Each dance has been arranged for a wide variety of instruments and ensembles. Brahms originally wrote the version for piano four hands and later arranged the first ten dances for solo piano.[2]