Tiny Moving Parts is a punk potpourri that's indivisible by the sum of its parts. On "Happy Birthday," the new single off the group's forthcoming record, Celebrate, they gracefully synthesize math rock with classic emo and budget-bin pop-punk and still manage to create something completely unique. Singer and guitarist Dylan Mattheisen—who recently received some attention in the punk scene for his guest appearance on the new Say Anything record, I Don't Think It Is—is one of the best guitarists currently working within the "twinkle-core" paradigm. Even the group's semi-questionable qualities, like their sappy, hyper-sentimental lyrics, are tempered by a genuine inventiveness that so many of their peers plainly lack. MORGAN TROPER