A documentary on Red Hot Chili Peppers may be in the works. Photographer David Mushegain posted a photo on Instagram featuring all four members of the band, writing, "such a rad day previewing our new @chilipeppers documentary."

He also shared a birthday message for drummer Chad Smith, who turned 58 on Friday (October 25th). Smith replied, "Thanks Mush. You're the best. Excited to show the world."

Mushegain has posted numerous behind-the-scenes photos and videos of the Chili Peppers on his Instagram in the past few weeks.

It's not exactly clear what kind of documentary this might be -- a concert film, a look at the making of a new album, or something else. There will likely be a concert element to the film, since Mushegain thanked Smith for "letting me sit next to you on stage all the time."

The Chili Peppers have been rumored to be at work on a new album, which would follow up 2016's The Getaway. In the meantime, bassist Flea, who recently got married, is about to release his memoir Acid For The Children on November 5th.