WATCH: John Mayer Performs 'The Joker' With Steve Miller

John Mayer has apparently checked another box on his bucket list of classic rock collaborations. 

The singer and co-frontman for Dead and Company jammed an acoustic version of "The Joker" with Steve Miller this past weekend at the retirement part of longtime Martin Guitars artist relations head Dick Boak.

Boak spent more than 40 years at Martin Guitars, getting the legendary acoustics into the hands of songwriters and rock and roll royalty.

The star-studded soiree included Miller, Mayer, Laurence Juber, David Bromberg and many others. 

In an Instagram post after the show, Mayer wished Boak well in his retirement.

"I got to play with Steve Miller (and some other incredible guitarists) on one of the greatest rock songs of all time, 'The Joker,'" Mayer wrote. “Love ya Dick, happy trails.”

Original article by Andrew Magnotta at iHeartRadio