Flavor Wave’s single, “The Optimist,” arrived less like a declaration and more like someone tentatively drawing back a dusty curtain on a grey afternoon. From West Chester, PA, these five lifelong friends – Kyle Loedel (vocals, lyrics), Matthew Stretch (lead guitar), Patrick Blair (rhythm guitar), Noah Montgomery (bass), and Joshua Speaker (performer/drums) – typically tread alternative rock paths nodding to influences like The Strokes....

Kansas City’s TYYE has delivered “whole thing,” a single that glides into your ears with the frictionless cool of a late-night drive but leaves behind the kind of emotional residue that sticks to your ribs. The R&B production is impeccably smooth, a sleek chassis of polished beats and pop sensibilities; The Weeknd taught it how to dress for the city, and a hint of...