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...

The first few bars of HZPROD’s new single, “War Within (Radio Edit),” don’t so much start a song as they do raise a curtain on a scene already in grim, perpetual motion. There’s a cinematic weight here, a feeling of vastness and confinement all at once. The beat hits with the grim finality of a heavy vault door swinging shut, trapping you inside the...