In the Steppes of Central Asia - Borodin
Alexander Borodin (1833-1887) was a Russian composer of the Romantic period and a leading member of “The Five”. His orchestral writing leans towards dark, blended sonorities with trombones used as harmonic weight with chorale-like textures.
The symphonic poem “In the Steppes of Central Asia” (1880), depicts a caravan crossing the Asian plains. The trombones are used as part of a broader brass choir, adding breadth and structural balast.
To learn more about the composer, visit Alexander Borodin on Wikipedia.
For more on the composition, visit In the Steppes of Central Asia on Wikipedia.
Performance
Alexander Borodin: In the Steppes of Central Asia
Excerpts
In the Steppes of Central Asia audio excerpts are available on tromboneexcerpts.org.
Trombone Parts and Full Score
The full score of In the Steppes of Central Asia 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 Borodin
Trombone Resources playlist of Borodin with trombones in the instrumentation.