The centennial of Robert Owens, a composer who worked abroad and assimilated into German culture, is being celebrated with a festival in Nebraska.

Watch Buck Owens and his Buckaroos perform their record-setting No. 1 hit single for a national television audience in 1966.

In the world of country music, there are many disparate regional influences — think Red Dirt in Oklahoma, and of course, the Nashville sound — that influence the genre. But few have had the outsized ...