COLUMBIA — Once called "the Buddha that I pray to every day" by Creedence Clearwater Revival frontman John Fogerty, Jerry Douglas has been a groundbreaking figure in bluegrass music for decades.

Mike Auldridge, who died on December 29 just a day short of his 74th birthday, is a sad loss to the cross-genre acoustic roots music generally referred to as "Americana". A master of the resonator ...