For 10 points, name this composition by Maurice Ravel.
This composition was humorously dubbed a "piece for orchestra without music" by its composer. Near its end, the trombones play glissandi after a brief switch from C major to E major. The saxophone is prominent during middle sections of this piece, which was begun after its composer abandoned plans to orchestrate Albeniz's Iberia. Commissioned by the dancer Ida Rubenstein, it features a gradual crescendo while different instruments pass around a theme. That theme is introduced by the flutes after the snare drums begin this piece with an ostinato rhythm that is played throughout. For 10 points, name this composition by Maurice Ravel.
This composition was humorously dubbed a "piece for orchestra without music" by its composer.
Bolero