Adriana Spuria’s new single, “Stone,” presents itself with the polished feel of a perfect skipping-stone, but listening closely reveals it has the curious weight of a fossil in your palm. Spuria sings of a very specific, modern affliction: the slow petrification of the heart. This is a loneliness born not from solitude, but from an inability to feel for anyone else, an insulation that...

Matt McKnzi stands out as a star in coming up with new ideas and evaluating himself. This new song of his, "Atlas," is a great mix of soul, hip-hop, and some heavenly sounds. And it shows how well he can mix different styles and still make music that makes you feel things. His unique style, a mix of neo-soul and energy R&B, is making waves in the...