I constantly hear music in my head. It's exactly like a song being 'stuck' in your head. I wonder if I have some sort of illness or is it just a result of bein

I constantly hear music in my head. It's exactly like a song being 'stuck' in your head. I wonder if I have some sort of illness or is it just a result of being a musician for 20 years I also have perfect pitch, which apparently may have more to do with genetics than training and experience