Listening to Elena C. Lockleis’s new single, “Mind - Vs. - Heart,” feels like witnessing a civil war fought entirely within a single nervous system. The sound is an intimate knot of pop architecture, the kind Julia Michaels patents in her sleep, where a confession arrives not as a ballad but as a skittish, rhythm-driven pulse. You feel the frantic heartbeat right there in...

Listening to RIOT SON’s new single, “Loneliest at Best,” is a curious exercise in emotional time-travel. The sound pulls you back to the early 2000s, to a time of angular guitars and heartfelt, frayed-collar vocals. It has that nervous, shimmering energy of indie rock that always sounded best on a pair of wired headphones, the beat prodding you forward even as the lyrics confess...