If you can’t beat ‘em, join ‘em. Norwegian duo Nico & Vinz obeyed that old idiom when they accompanied Taylor Swift on stage for a performance of their 2014 pop hit “Am I Wrong.”

Swift has made a habit of introducing besties for the crowd during her gigantic 1989 world tour (the entire World Cup-winning U.S. Women's Soccer Team got the call when she played New Jersey last month). When the trek swung through Vancouver on the weekend, the Nordic pair were invited to join Taylor’s inner-circle for a cover of their breakthrough song.