

ROBERT JOHNSON: (Singing) I got to keep moving.

(SOUNDBITE OF SONG, "HELLHOUND ON MY TRAIL") And in Robert Mugge's "Notes From The Road: A Filmmaker's Journey Through American Music," Mugge reminisces about directing more than 25 music documentaries, his subjects including Robert Johnson, jazz great Sonny Rollins and soul singer Al Green. Robert "Mack" McCormick's "Biography Of A Phantom: A Robert Johnson Blues Odyssey" is a long-awaited study of blues pioneer Robert Johnson's life, written during the 1970s but never published until now. Our rock critic Ken Tucker has been reading two unusual books about music history.
