Not every interpreter is cut out for concert work, and not everyone wants to do it. It's exhausting, both mentally and physically... It's taxing to provide meaning, convey emotion, and keep the beat at the same time.
It’s a fascinating look at making music visual. I had no idea that I could see the movements in action, but that was silly thinking on my part. Of course, YouTube has an amazing collection of people interpreting songs in American Sign Language. They are nothing short of brilliant. Check out Adele’s “Rolling in the Deep” and “A Horse With No Name:”