Over the course of their decades-long existence, Roomful of Blues effectively became a franchise unto themselves, establishing a sound that endured despite nearly constant changes in their lineup. More than 45 musicians have been part of Roomful of Blues since their formation in the late '60s, and a number went on to notable careers of their own, including guitarists Duke Robillard and Ronnie Earl, organist Ron Levy, pianist Al Copley, singer Lou Ann Barton, vocalist/harmonica player Sugar Ray Norcia, and drummer Fran Christina (later of the Fabulous Thunderbirds). While Roomf...