After wrapping up a three-day run at the Chicago Theater this past weekend, Susan Tedeschi and Derek Trucks of the Tedeschi Trucks band weren’t ready to call it a night. Instead, the duo headed over to Legends where they made a surprise appearance on stage with Buddy Guy.

Check out the full show in the video below. Skip ahead to shortly after the 3-hour mark to see Tedeschi, Trucks and Buddy Guy and band jam on the Muddy Waters tune “She’s Nineteen Years Old”.

“When you come to Legends, man, you don’t know what you’re gonna get,” said Guy as he introduced the pair.