Boléro - Ravel
Maurice Ravel (1875-1937), was a French composer of Impressionist and Early 20th Century music.
Ravel completed Boléro in 1928.
To learn more about the composer, visit Maurice Ravel on Wikipedia.
For more on the composition, visit Boléro - Ravel on Wikipedia.
Performance
Ravel - Boléro | Alondra de la Parra | WDR Symphony Orchestra
Excerpts
Ravel - Boléro audio excerpts are available on tromboneexcerpts.org.
Trombone Parts and Full Score
The full score of Boléro is available on IMSLP.org.
NOTE: IMSLP provides access to public-domain scores and parts, with copyright status varying by country. Users are responsible for observing applicable copyright laws.
Trombone parts are available on IMSLP.org as follows:
Ranges and clefs by Part

More Ravel
Trombone Resources playlist of Ravel with Trombones in the instrumentation.