This is Linda Ronstadt on Glen Campbell’s Good Time Hour (1971), doing Long, Long Time solo and then a duet (Carolina In My Mind) with Glen. When I first watched it several years ago on Tubi, my initial impression was that her voice was sounding on the nasal side, and then before she gets started singing with Glen the side of her hand goes up to her nose and there is that telltale "snarff." . . .
Linda Ronstadt & then Glen Campbell - Long, Long Time & Carolina in My Mind

