Rice Miller. His debut recording at the age of 49, along with Elmore James, also debuting (at 33) and pianist Willie Love (44). The first Trumpet release selling considerably. See also: Crazy 'bout You Baby.
Joe Hill Louis [for Modern]
Who [in Tommy]
Eric Clapton [in film version Tommy]
Charles Et Les Lulus [vocal: Roland]
For the difference between Sonny Boy Williamson I & II: see Don't Start Me Talkin'.