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....

The first listen of Haus of Sound’s new single, “Mirage,” is like walking into a room where a beautifully ornate vase has just been shattered against a wall. There's a jagged, crystalline energy here, a collision of theatrical drama and raw, modern discontent. Evolving from their 2000s tribute roots, the Everett band has synthesized the best of that era’s angst—the coiled tension of early...