In September, WGBH celebrates this uniquely American art form, from its deep roots in ballads, blues and hymns to its influence on rock ‘n’ roll and beyond.

A Science Odyssey is a production of WGBH Boston and the WGBH Science Unit. "Origins" is produced by David Espar and Diane Hendrix. The executive-in-charge is Paula S. Apsell, executive producer ...