I have had the exact same thing since I was 7 years old. It went away when I started taking Risperdal so you might want to give an antipsychotic a try. But the music without voices or lyrics is what I also experience and then the panic attacks. I can feel it start coming on a half hour or so before it gets really bad. If you read a book out loud or watch tv it really helps. Hope things get better. But I have the exact same thing. Try an antipsychotic or coping mechanism.