Talk about a lucky shot!
Bradley actually did more than just sneak into the father-of-six's snap. Fans were surprised to see the 42-year-old crash musician Kris Kristofferson's set at the music festival!
Turns out, it was all for the new dad's directorial debut, A Star Is Born, which co-stars Lady Gaga. He previously opened up about the project on The Ellen DeGeneres Show.
"I thought I sang. I was like, ‘Yeah, I sing.’ It’s so hard to sing!" he admitted. "I would get fatigued at the end of even a phrase… I’ve really been awakened to the phenomenon of singing. I just hope I can be believable enough so you can watch [Gaga] just shine. Because she’s incredible. I just have to make sure at least you believe my character so she can then be incredible."
We can't wait to watch!