While they are not officially credited as "features" on the title, the guest vocalists include: and Tony Marino Bobby Wooten and Jared Manierka (Jepsen's bandmates) Ben Romans (Collaborator) Nate Cyphert (Songwriter/Backing vocals)

Carly Rae Jepsen 's song does not have a featured artist in the traditional sense, as it is credited solely to Jepsen. However, the track is notable for enlisting a chorus of male backing vocalists to deliver the song's "disappointed dating" lyrics .

These male voices provide a "pseudo-theatrical" touch to the song, acting as the anonymous voices of the various "flawed boyfriends" Jepsen describes in the lyrics. In the , many of these same collaborators also make cameo appearances. wikipedia.org/wiki/The_Loneliest_Time">The Loneliest Time ?