The Hollyfelds five — Eryn and Keith Hoerig, Kate Grigsby, Tim Mallot and "Magic" Sam Spitzer — are blessed with talent to spare. The music on Saratoga, their most recent full-length, and the forthcoming EP Black Heart Blue, offer up crystalline harmonies, irresistible melodies, sturdy playing, and lyrics that feel lived rather than invented. But arguably their most important quality is sincerity. Instead of smirking at country music's verities, the players unabashedly celebrate them — and that makes all the difference.