"We were basically chasing sounds, you know? We were going after what we dug. We weren't thinking of trends or movements, revivals . . . We couldn't get enough of the records, which were hard to come by in those days, and when we found out that you can hear it in the flesh, we couldn't get enough of that." Blues Discovery: Reaching Across the Divide (2nd Revised Edition) tells the stories of half a dozen Americans who defied the dictates of segregation...