Samantha Mora’s “Luto” arrived like a half-remembered dream, a wisp of smoke curling from a candle just extinguished. It's not a song to shout from rooftops; it's something you feel in the space between your breaths. Her voice is so smooth, a rich velvet you could lose yourself in. You'd almost think it could just glide across the cumbia rhythms like a hummingbird over...

The new single from Quentin Moore, “Kiss Your Lips,” doesn’t so much start as it seeps into the room, lowering the lights and raising the temperature by a degree or two. Moore is at the piano, his vocals draping over the notes with the patient weight of heavy silk. The entire thing feels excavated from some lost '70s studio session, a slow jam built...