Google Play offers a selection of MP3 Singles for free during its EDM Meets Pop sale. That's the first deal we've seen on these pop songs which were perfectly adequate before, but now feature filthy build-ups and sick drops. Available DRM-free tracks feature remixes by DJ Tiësto, Skream, Calvin Harris (pictured), Steve Starks, Jody den Broeder, Florence + The Machine, Lady Gaga, and more. (iTunes charges 99 cents or more for most of these tracks.)