Boléro is a one-movement orchestral piece by the French composer Maurice Ravel (1875–1937). Originally composed as a ballet commissioned by Russian actress and dancer Ida Rubinstein, the piece, which premiered in 1928, is Ravel's most famous musical composition.
The key idea of developing the cover is to use typography as the major design instrument to show the increasing rhythm of the composition and its volume, intentionally avoiding any other tools such as color, graphics, or photography.