A posturing guitar riff, muffled drums that kick in like a boot in the face, the kiss-off opening lyric, ”And I know that I am always (expletive) up your world" — All Dogs know how to start a song, ...

These are the best songs of 2015, the ones we couldn't stop playing, the ones we shared, the ones we kept close all year long. Now we're happy to share them with you. Click on the "Launch the app!" ...