Yes, my voice is not dependable. Sometimes all of a sudden I can't sing. I think it is because the muscles tighten and restrict the air flow. I am trying to do vocal exercises and breathe correctly and I am hoping to get it to be more dependable again.

I think PD is a constant battle against stiff muscles. I used to have trouble raising my arms over my head, but if I do the exercises I learned in PT for my shoulders, I can raise me arms up. I hope to be able to do the same for the muscles used in singing. That includes muscles in the face and jaw and neck. If the muscles are tight, the amount of air that can get through is limited and that interrupts the sound.