Boléro is a 1928 work for large orchestra by French composer Maurice Ravel. It is one of Ravel's most famous compositions. It was also one of his last completed works before illness diminished his ability to write music. Composition. The work's creation was set in motion by a commission from the dancer Ida Rubinstein, who asked Ravel for an orchestral transcription of six pieces from Isaac Albéniz's set of piano pieces, Iberia.
https://en.wikipedia.org/wiki/Bol%C3%A9ro