As she celebrates her engagement and fights for her autonomy, we celebrate the best of an artist who helped to define 21st-century pop

Spears previously flirted with dubstep on 2007’s Blackout, but it was Hold It Against Me that dragged the then-underground dance music into the mainstream. A decade later, and its blistering amalgamation of industrial EDM and saccharine pop melodies still feels every bit as audacious and innovative.