Sometime in between The Killers’ “Mr. Brightside” and Kanye West’s “Stronger,” electronic music officially became pop again. Long relegated to the support role after the death of new wave in the 80s, the keyboardist became a more prominent player (pun absolutely intended) in a band once again. Often just an add-on in a guitar-driven musical landscape, the keyboardist now plays the riffs, front and center. The buzzing sawtooth that starts Phoenix’s “1901” and the glossy bounce that propels Passion Pit’s “Take a Walk” are what gets stuck in people’s heads these days.