If anyone cares, here's more... :)

From the liner notes, written by John Cohen, to 'Roscoe Holcomb---The High Lonesome Sound,' on Smithsonian/Folkways:

"His style of singing contained church and blues elements: bending notes, extending phrases, singing sharp, singing flat, the ways of ornamenting certain notes, and especially the breathing and the intense energy level. Roscoe's singing has become known as 'the high lonesome sound.' I made up that phrase in 1962 to describe his special qualities, and the term has travelled widely since then. Today it is the generic term for all bluegrass singing."

---Lepus Rex