Paul Butterfield was the first white harmonica player to develop a style original and powerful enough to place him in the pantheon of true blues greats. It's impossible to overestimate the importance of the doors Butterfield opened: before he came to prominence, white American musicians treated the blues with cautious respect, afraid of coming off as inauthentic. Not only did Butterfield clear the way for white musicians to build upon blues tradition (instead of merely replicating it), but his storming sound was a major catalyst in bringing electric Chicago blues to white audi...