Respected music-writer Peter Guralnick recently republished his 1989 book "Searching

for Robert Johnson" in paperback. The much-lauded volume traces the short life

of bluesman Johnson through accounts by contemporaries such as Johnny

Shines and Robert Jr. Lockwood. Johnson, who was poisoned in 1938 at

age 27, left behind a body of Delta-blues classics, including "Cross Road Blues" and

"Hellhound on My Trail."