The grand ole soap opera Nashville closed out its fifth season with intrigue, heartache, and a slew of heartfelt, twangy songs. Hayden Panettiere’s trauma-scarred megastar Juliette Barnes triumphs with the gospel choir-assisted redemption song “On My Way”; Lennon Stella, who plays ingénue Maddie Conrad, flaunts her sultry alto on the sparse “Beautiful Dream.” Carolina Chocolate Drops leader Rhiannon Giddens, who plays social worker Hallie Jordan, gives her banjo-picking skills a workout on the bluegrass-tinged rave-up “Going Down the Road Feeling Bad.”