The way these Appalachian-born singers bend and glide and flip over their melodies—it can stir your soul and break your heart at the same time. You can trace this style of singing back to bluegrass ...

“Amazing Grace” as it appears in Ginny Hawker’s family heirloom songbook, Lloyd’s Primitive Baptist Hymns. You can see stains in the margins, left by the tobacco-covered hands of her aunt Annie Maud ...