The band members from cult rock mockumentary This Is Spinal Tap have agreed to reunite in a bid they claim will ensure a $400m (£321m) lawsuit against media firm Vivendi “goes to 11”.
“This is Spinal Tap was the result of four very stubborn guys working very hard to create something new under the sun,” said McKean.
The film, which had a shoestring budget of $2.25m, was released in 1984 and became a global cult classic.
The complaint alleges that between 1989 and 2006, Vivendi reported that the total income from soundtrack music sales was just $98.