Amy-Lin Slezak’s “Known 3 Yrs. Seen 24 Hrs” opens with the bright, optimistic twang of country pop, a sound so sun-drenched you can almost feel the heat coming off the asphalt. The fiddle weaves itself through clean acoustic strums and soaring electric guitars, a musical language we all know. But the story it tells is something wonderfully specific, a peculiar ache you didn't know...

SERAh's new single, "Favorite Game", which features female vocalist Summer Rona, is the kind of track that feels less like it was composed and more like it was captured—a distress signal from a beautiful, dying star. The sound here is a curious contradiction. It’s vast and cinematic, shimmering with the sort of synthesized light that promises galaxies, but its heart is small, cramped, and...