I'm in our church choir which I love and also in a bell choir which was very hard when my T first started. I wore earplugs for a couple of months then slowly stopped wearing them, and it doesn't bother me too much anymore. Sometimes my T is worse on Mondays and Thursdays (the day after rehearsal) and for awhile I considered dropping out of choir. Then I realized that I loved choir more than I hated the T and I didn't want it to dictate what I could do. I'm slowly habituating so I just accept that Mondays and Thursdays might be "louder" T days. I think you should try worship with earplugs at first, and if it doesn't make your T worse, then you can try it without them. It all depends on how loud your music is and how sensitive your hearing is. I do put my earplugs in if the trumpet player comes, but that's usually just for big feasts like Christmas and Easter!