20. Classixx, 'Hanging Gardens'
The fizzy, elegant L.A. remixers (Phoenix, Madonna, Passion Pit) channel the throw-your-hands-in-the-air pleasure principles of '80s dance pop. "All You're Waiting For," with LCD Soundsystem's Nancy Whang, conjures Madge's rubber-bracelet debut; elsewhere there's the conga-handclap magic of vintage Latin freestyle. But the helium-balloon builds, primordial-ooze bass lines and thick-waisted beats are all 2013, just minus the stadium EDM overkill.