Spinal Tap fans, get ready to have a good time all the time.

The creators of the comedic heavy metal band, memorably chronicled in the cult-classic mockumenatry This Is Spinal Tap, are writing a book about the film, People magazine reports.

Gallery Books will publish A Fine Line Between Stupid and Clever: The Story of Spinal Tap in the fall. The book is written by director Rob Reiner along with the actors who portrayed the band, Christopher Guest, Michael McKean, and Harry Shearer.

Spinal Tap made its debut on the 1979 sketch comedy television special The T.V. Show before This Is Spinal Tap premiered in 1984. The film, a satire of rock documentaries, was not a box-office hit, but it gained a dedicated following and coined a catchphrase related to the band’s superpowered amplifiers: “These go to 11.”

The band released a soundtrack album to the film, along with two more in the following years: Break Like the Wind in 1992 and Back From the Dead in 2009. A sequel to This Is Spinal Tap, titled Spinal Tap II: The End Continues, is scheduled to premiere this fall.

The book, Gallery says, will tell the story of the making of the film and its sequel. Reiner and the actors will “tell the complete story of the movie and its fictitious band—how they met, how Spinal Tap came to be, and how their low-budget indie film took on a life of its own.”

A Fine Line Between Stupid and Clever is slated for publication on Sept. 16, four days after Spinal Tap II hits theaters.

Michael Schaub is a contributing writer.