The Wolf was a powerful and tasty, though simple, harp player. he learned to play from his brother in law, Sonny Boy II.
As to his voice, he had at least three dramatically different vocal sounds in addition to his wolf howl, all of which which he used to great effect. There was the pinched, nasal sound, the hollow sound that seemed to be coming out an airshaft, and the flat out gravelly belt. Listen to his recordings of "Evil" and "How Many More Years" for a demonstration.
In his day he was as big as Muddy Waters and they had a rivalry going.
Do you know what network that's on? The channel numbers in my area are probably different.
Winslow