Charles Douglas Musselwhite is an American blues harmonica player and bandleader, one who came to prominence, along with Mike Bloomfield, Paul Butterfield, and Elvin Bishop, as a pivotal figure in helping to revive the Chicago Blues movement of the 1960s. He has often been identified as a "white bluesman".

Elvin Bishop is an American blues and rock music singer, guitarist, bandleader, and songwriter. He was inducted into the Rock and Roll Hall of Fame as a member of the Paul Butterfield Blues Band in 2015, and in the Blues Hall of Fame as a solo artist in 2016.