Yes musician earplugs are not good for long times of loud sound exposure. Even normal ones may not be enough as sound vibrations also travel through our bones.
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and sorry about your T that is now worse, I pray it goes down again quickly!
So sorry to hear. Hopefully it's a long spike that will settle down.
Do you play in an orchestra?
I wish your ENT knew that it was a bad idea to go. Sorry it happened and hope you recover from the spike! Im positive if I live through this many events are just never going to be allowed again. Live music top of list.