http://www.nytimes.com/2011/03/22/arts/music/pinetop-perkins-delta-boogie-woogie-master-dies-at-97.html?hp

Pinetop
Perkins, the boogie-woogie piano player who worked in
Muddy Waters’s last great band and was among the last surviving members of
the first generation of Delta bluesmen, died on Monday at his home in Austin,
Tex. He was 97.