Can I still implement drama therapy and music therapy techniques in my future private practice without being registered?

Hello, I would love to get advice and guidance from you or if you could point me in the direction of any resources or any mentor opportunities or someone who can help :) My name is Ashleigh and I am about to begin my 2nd masters degree in mental health counseling. My first masters is in musical theater studies. I am very interested in starting my own practice and implementing drama therapy and music therapy in my counseling sessions. I am just not sure I want to be a registered drama therapist. I am so confused if I can still implement those techniques without being registered.

Any advice would be greatly appreciated and thank you so much for your help.