Calvin Harris' production work is as varied as his solo catalogue—from indie-dance remixes for bands like Passion Pit to his floor-filling pop smashes with Rihanna. But it all has one thing in common: Harris' ultra-vivid synths, rife with 8-bit bleeps, sawtooth leads and shimmering pads, which bubble and sparkle from the corners of every song like geysers spouting pure champagne—the expensive stuff, too.