The Hungarian Dances by Johannes Brahms (WoO 1), are a set of 21 lively dance tunes based mostly on Hungarian themes, completed in 1879. 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.
The above text from the Wikipedia article "Hungarian Dances (Brahms)" text is available under CC BY-SA 3.0.