John Mayer continued his Search for Everything tour with a show at the AT&T Center in San Antonio where he was joined by fellow blues guitarist Jimmie Vaughan for a pair of songs during his Trio set.

Vaughan emerged to join Mayer, Pino Palladino and Steve Jordan for his own “Roll, Roll, Roll” as well as the classic Robert Johnson tune (and John Mayer Trio cover staple) “Crossroads.”

Mayer and Jimmie Vaughan have shared the stage on a number of occasions, most famously at the Rock and Roll Hall of Fame when they paid tribute to the late Stevie Ray Vaughn alongside Gary Clark Jr., Doyle Bramhall II and more.

Watch a portion of Vaughan’s sit-in above.