I just rescued this recording from a failing reel-to-reel tape. This is the Coast Guard Band in 1972, and I had been in only a couple years at that point. The solo part came off pretty well, I think. I'm using a Besson New Standard with a Bach 6-1/2AL mouthpiece (using the adaptor to get from tenor trombone mouthpiece to fit the European receiver).
https://youtu.be/JF72XTCcoEU