Last month, Broken Social Scene’s Kevin Drew released a collaborative album with Andy Kim, the Canadian songwriter best known for the Archies’ “Sugar, Sugar. And last night, Kim took center stage on Letterman to perform the It’s Decided track “Sister OK” with a full band and Drew accompanying him on guitar. Letterman seemed particularly chummy with the band, cracking jokes beforehand comparing the two of them working together to a sitcom couple. Watch below.

It’s Decided is out now via Arts & Crafts.