A few years ago after not playing for a long period of time I practiced on my trumpet several days to play gig. That nite playing in a club that was quite noisy & having to play loud, I experienced the following; In the middle of a ride, the fine tone that I had suddenly sounded like one of my valves had turned in my horn or sounded like a "sick cat". I managed to finish the gig but the few times I tried to play after that was the same thing so I quit playing. Three months ago I decided to try to build up my chops by practicing an hour or so each day thinking that whatever I had done to my chops had healed but I still have the "sick cat" tone. I'm thinking that I have ruptured my chops or something of that nature. Has anyone experienced something like this or know of someone & what exactly did I do to my chops????