“Not Palm Beach” is a moody, tongue-in-cheek postcard from somewhere far less polished — and far more real. With smoky vocals and sly, shimmering production, Rebecca Marshall blends sunset Americana with atmospheric pop to explore the space between where we are and where we thought we’d end up. Witty, wistful, and just a little defiant, it’s a love letter to the detour, with sand still in its shoes.