Here’s a secret about pop: It doesn’t necessarily mean popular. Instead, it’s a sense of catchiness, a sense of play. And just because it sounds sweet doesn’t mean it’s pandering. Mixing the electronic-leaning side of indie with a new class of jangling, guitar-based (but decidedly un-rock) sounds, here’s a playlist we think earns both words of its title: not mainstream, but certainly not here for a fight. We regularly swap in new tracks, so if you hear something you like, add it to your library.