How hearing loss influenced the legend's playing.
'Berry Jr. reveals that while his dad was playing the right structure of, say, a solo, he would be playing it in the wrong key because of his hearing loss.
“Sometimes he would glance over, and we’d be like, ‘E!’ and he’d go back into the right key, or we’d hold up our hands, like, ‘[Go] here on the neck!’ ‘Ah, oops!’'
