Most late night hosts get at least four or five nights of airtime per week, but not John Oliver. He just gets one, except on special occasions like last night, when he was a guest on The Late Show. That extra time gives him ample room to shoot the breeze about fun topics like Tim Kaine’s harmonica, his feelings about Lorelai Gilmore (John Oliver’s feelings, not Tim Kaine’s, although can you IMAGINE), and more.

Just in case you also want to see the Last Week Tonight host doing DNC-themed acappella against his will, check this out, too.