A late-autumn chill hangs over One Lonely Shadow, the fourth album by Tennessee bluegrass trio Blue Moon Rising. The group largely avoids genial expressions in favor of moodier material that ranges beyond familiar bluegrass sources. Members Keith Garrett, Chris West, and Justin Jenkins add modern country and pop/rock ingredients to their sound, serving up a cover of Bruce Springsteen’s “Youngstown” as an elegy to American industry and interpreting Townes Van Zandt’s “Marie” as a doom-stricken Western ballad. “The Hanging Tree” (a grim Civil War-rooted narrative) and “Stone Cold Loneliness” (an emotionally bleak vignette) reinforce the album’s often fatalistic tone. There are some bright spots amidst the gloom — “Good Time for Coming Home” and “Where There’s a Road” have a zesty, affirmative feel to them. Blue Moon Rising takes a tight, economical approach to its playing, with Jenkins’ banjo adding particular sparkle. Tracks like “Angeline” proceed at a cantering pace, while “Five More Days of Rain” breaks into a full-on gallop. One Lonely Shadow cuts down on the sweetness of typical bluegrass while keeping the musicianship sharp and incisive.