Melody has a certain way that it projects back to you. It triggers certain nerves in your body and certain instincts that normally wouldn't be triggered by a normal voice.
“I lost my voice for the first time. I was so bummed out, but it happens to every singer at some point in their career. I don't think most people understand, but I sing every night and sometimes we do five shows in a row, which is really bad for your voice.”