Yo-yo Ma could only play while reading sheat music until he was forced to improvise by Bela Flek like maybe 20 years ago. Yo-yo Ma has been one of the premier cellists for like my whole life and I'm 50.

I can barely read music, but I can play about 20 different instruments well enough by ear and feel to jam with total strangers in lots of different styles and not feel awkward or fuck up the vibe. Does that put me anywhere near Ma's level of musicianship? Oh hell no. But I damn well claim I'm a musician.