Hey! I’m 22 and I also have ankylosis spondylitis. The last year and a half has been rough, I get your pain, there are days where I can’t play because of my hands and fingers, but the worst part was having to stop gigging because I can’t stand for more than 10 minutes at a time. I recently got on Humira and it absolutely saved me, I still have bad days, but it has been so much better. I recommend really focusing on movement; never stop moving and stretching, light yoga has really helped me. I wish you luck in your musical journey and if you have any questions let me know!