Songwriting polymath Ani DiFranco has a new album coming out: Binary, her ninteenth solo studio effort, arrives June 9 via her own Righteous Babe record label. Today, she shares “Zizzing,” a quietly adventurous tune featuring Justin Vernon of Bon Iver on backing vocals. Vernon sings on the intro, and provides a sort of hocketing accompaniment to DiFranco’s conversational vocals on the chorus. Hear it below via Consequence of Sound.