You should go practice. Your should go practice and be glad to do it. Listen to Hector Berlioz.
Roman Carnival Overture for Trombones
This is not the way Berlioz envisioned Roman Carnival Overture. We think this arrangement might be better. The US Army Field Band Trombone section shows how in this video.
What other Berlioz works would be better for a bunch of Trombones?
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