Jon Hopkins' Immunity gave us some of the most taut and explorative electronic music of 2013. Now he's surprising us again by reworking some of those tracks with vocalists. After a new collaboration with Bat For Lashes, Hopkins added a Purity Ring guest spot to "Breathe This Air" and a soulful Lulu James performance to the previously instrumental opener "We Disappear." Now you can watch the Rob Chiu-directed video for the latter.