When I was in High school I used pressure and high power air to play lead. Big mistake. Anyhow one day I am playing along and I just didn't feel right. My chest began to hurt. I figured I pulled something, it got worse. I ended up in the emergency room. The Dr. felt and squeezed along my lower neck, asked if I had been vomiting forcefully. I said no, but I played the trumpet and blew quite forcefully. He called in other Dr.s and nurses on the floor to look at me and had them push on my neck and about my lower shoulders. He told me to do so as well. I could feel a crackling weird feeling. I about freaked. If I understand this right I blew a bleb and air leaked from one of my lungs. I took some time off and had no more problems. I hear this has ended some from ever playing again. Ever hear of this.