NPR's Present at the Creation: Barbershop Harmony
A search through the vaults of National Public Radio unearthed this 2002 story on barbershop's Black origins, featuring musicologist Gage Averill, Dr. Jim Henry, and a performance by The Gas House Gang.
"The common image of a barbershop quartet is of white men singing four-part harmony, but the musical form actually emerged from the barbershops and street corners of African-American neighborhoods. In the latest segment of NPR's Present at the Creation series, Jim Wildman reports on the roots and styles of barbershop for Morning Edition."