I play in a ten-twelve piece brass ensemble at one of our local 'mega churches' as an accompaniment for their hymnsings. These are attended by 1,200-1,400 people, singing all of the verses of 12-14 'traditional' hymns. I am expected to play them all, but, I admit to faking it a bit, with my trumpet up to my lips, but, letting one of the other lead trumpeters carry things for a verse. This kind of playing is an absolute chop buster for a 73 year old guy, but, my fellow lead trumpeters are 76 & 62, so we aren't kids anymore. Another method for saving my chops is to switch to the alto line once in awhile. It does help.