I put the first and last pages of the fourth trombone part up here in a thread, and it may have been taken down.
There are six trumpet parts, four trombone parts plus a tuba. We are managing with 4-3-[1 - tuba part covered specifically on tuba, on a small portion of the fanfare]
The fourth trombone part features nearly all of the tuba part, and the tuba seems to just be added for richness of sound whenever it enters (somewhat like the Dahl - “Music for Brass”).
The fanfarish stuff near the beginning is fourth trombone and is not particularly low – starting on a D above the staff, with sudden downward jumps playing high-velocity figures and then jumping right back up. I’m playing the more military and fanfarish-sounding stuff on the cimbasso, and the more legato and static stuff (roughly 2/3 of the second of three pages) on the tuba.
My regular mouthpiece for the cimbasso sounds great, but I have an old small shank. smaller cup opening, and very small throat 1970s “MIRAFONE F/Eb” mouthpiece that negotiates wild skips very and very gymnastic playing more easily, albeit with a slightly smaller sound.
I will be using that mouthpiece on this fanfare. Perhaps a positive (??) is that it sounds like a “large trombone“ rather than a “giant trombone“. That having been said, my regular mouthpiece is better for some of those rock charts where it sounds good (yes, to the MD) in the same way that the bass trombone sometimes sounds good overwhelming a big band.
Anyway…
I’m glad I tried out this old mouthpiece on this piece. It will have saved me hours of practicing.