There’s a curious sort of old-soul gravity to Amelina’s single, “Step by Step,” one that defies the pop-rock sheen and the artist’s young age. The track opens with a resolute, almost stern, string and piano line that feels less like an invitation to a party and more like the sound of someone tying their shoelaces before a long journey. This is the sound of...

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...