PC Music leader A. G. Cook drops his first solo track in a couple years, featuring glorious backing vocals from Caroline Polachek (who collaborated with Cook on her forthcoming solo LP Pang). A. G. Cook says of "Lifeline":

"The melody at the core of “Lifeline” is this repetitive, insistent and slightly selfish earworm that I've been living with for too long now. In the end, the easiest way to deal with it was to leave it in a warm petri dish and let it do its own thing. A few years later I found myself with this young, unstable song, and somehow nurtured it to become a power ballad. The track has a life of its own, but like most children and laboratory experiments, the apple doesn't fall far from the tree.”