So, because I have a taste for the perverse... Switchfoot’s Jon Foreman sang alongside Taylor Swift in. They shared a duet of Switchfoot’s breakout hit “Meant to Live” before an arena full of little girls, who - judging from all three angles of the same concert - knew the lyrics.
Swift proclaims Switchfoot "one of her favorite bands" and she has included their "Dare You to Move" in her acoustic shows (top video), so . . . maybe there's hope for the younger generation after all.