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...

Some tracks do not ask for your attention; they simply grab you by the collar and drag you onto the dancefloor. Tyler Shea has managed to do exactly that, but with a twist. His new single "Holly" is a massive, upbeat pop track built entirely around the deeply uncool experience of having a minor panic attack over a text message. It is the sonic equivalent of...