Originally Posted by youbet
Climate controlled trombone storage area.
You don't have to keep the trombone warm. Just have to keep the mouthpiece in your pocket. Learned this from watching the brass players pulling the skin off their lips during the Nixon ('72) inaugural parade. We had to stand in below freezing weather for 3 hours before the parade started, and when the brass players finally put their instruments up to play their lips froze to the mouthpieces
It's one of those times when you shouldn't laugh but can't help it. Luckily I was playing sax. My reed split so I was humming through it like a kazoo, but there was no blood involved.