Featuring former Pretty Girls Make Graves guitarist Derek Fudesco, Seattle trio The Cave Singers are led by Pete Quirk, whose nasal, quivering voice floats over the entirety of the band’s debut Invitation Songs. Quirk’s delivery is engaging, but the cascading horns and ghostly backing choirs are the real treats, fading in . . .

Intertwined melodies in the spirit of Emmylou Harris and Gram Parsons are spread across husband-and-wife duo Sarah Lee Guthrie and Johnny Irion’s Exploration, their most recent set of originals, which they recorded with members of Son Volt and The Jayhawks.