I'm not a trombone or brass performer myself, more of a classical composer and arranger. My dad plays trombone and had me arrange this piece for him last year. I was thinking some people on here might enjoy it (especially advanced trombone performers looking for a Christmas arrangement) Here is a link to a sample of the score: https://musescore.com/user/6280351/scores/5340571/s/gfZl7Y
If you're interested in purchasing the whole piece, here is a link to my website: https://dominioninmusic.com/
Have a good Christmas!
All the best,
This is a very advanced but fun piece for trombone, so enjoy!