Lately I've been having trouble relaxing when I play, my neck usually bulges and I sound really tense in my middle register. I've recorded myself, and I sound tense up to about an F on the staff, then it's like G on top of the staff and above is magic and I sound really good. I actually sounded more relaxed on a high C then I do an F, an F is a really bad note for me. Sometimes I close my eyes and open my throat enough to try to fit an egg in my mouth, but my neck still bulges. How do I relax?