Academic Festival Overture - Brahms
Johannes Brahms (1833-1897), was a German composer of the Romantic era who used trombones sparingly but strategically.
Academic Festival Overture (1880) is a celebratory collage of German student songs. Trombones are silent for much of this composition but when they do make an appearance late in the work, they add ceremonial authority.
To learn more about the composer, visit Johannes Brahms on Wikipedia.
For more on the composition, visit Academic Festival Overture on Wikipedia.
Performance
Symphonic Gems: Brahms - Academic Festival Overture - Blomstedt | Concertgebouworkest
Excerpts
Academic Festival Overture audio excerpts are available on tromboneexcerpts.org.
Trombone Parts and Full Score
The full score of Academic Festival Overture 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 Brahms
Trombone Resources playlist of Brahms with Trombones in the instrumentation.