With as much press as Twilight star Rob Pattinson gets, you’d think he’d know a celebrity when he meets one. But that wasn’t the case when he missed his chance to get a personal guitar lesson from Brad Paisley.

On last Thursday’s Late Night With Jimmy Fallon, Rob admitted that he thought Brad was an employee at a Nashville guitar shop where they were both picking out instruments.

“There was a guy there in a baseball cap, and he was just playing guitar. And he was like, kind of one of those guitar shop people who seem really impressive. I’m sitting there playing my G and C, and that’s about all I can manage. Every single time I touched a guitar, they were like, ‘Do you want this guy,’ What was his name? Who is the most famous country guitarist? Brad Paisley! ‘Do you want Brad to just play it?’ I was like, I just thought he was a guy who worked there.”

Rob was only passing through Music City and made a pit stop to purchase a few new instruments.