Every month we list 15 songs you have to hear now, and for December, chipper boy-girl quartet the Magic Numbers, punk mainstays the Slits, novelty act the Upper Crust, and British-sounding Texans Voxtrot have made the cut. Plus, hip-hop all stars like Young Jeezy and Jay-Z get a nod for their infectious scratches and samples, while Los Abandoned earned their spot thanks to a bilingual and blazing tune about suburban life. With these scorching songs, your playlist will be stocked with some of the newest music that rocks.