The joyous whoop that Sonny Terry naturally emitted between raucous harp blasts was as distinctive a signature sound as can possibly be imagined. Only a handful of blues harmonica players wielded as much of a lasting influence on the genre as did the sightless Terry (Buster Brown, for one, copied the whoop and all), who recorded some fine urban blues as a bandleader in addition to serving as guitarist Brownie McGhee's longtime duet partner.
Saunders Terrell's father was a folk-styled harmonica player who performed locally at dances, but blues wasn't part of his repertoire (he...