As we have discussed before, Justin Vernon is the man behind Bon Iver, the Official Bearded Moody Wisconsin-Based Band of NPR Music. But that doesn't mean he doesn't enjoy a good jam with his high school jazz band.

That's right — on Sunday night, Vernon headed back to Memorial High School in Eau Claire, Wis., to his one-time home: Jazz Ensemble I. In this all-too-short clip, he and the band perform "Since I Fell for You."

(Hat-tip to Stereogum.)