Same age, same type of stutter. It sucks. I've got no confidence either, though Im getting there slowly. I guess ive just accepted that its a part of me and nothing is going to change that. While I've never really met people who have similar speech impedimants like me in my personal life, I've befriended a bunch of people that just dont care/notice it. I try to live as normal of a life as possible, and it is especially hard when it comes to jobs and interview, but i try nontheless. I guess what I'd recomend is to just know that it'll always be there, and know that your stutter doesnt prevent you from a career in music. It might impede communication (its the nature of having a stutter) but that doesnt take away from that you have a desire for music, a love of music, and a passion for music. Im also guessing that you have a great musical talent, so focus on that.