That trend will continue in Spinal Tap II: The End Continues, where the band gets together after decades of being estranged for one final show. Rob Reiner confirmed to CinemaBlend that he leaned on the advice of some of his famous friends, like Paul McCartney (who appears in the sequel), for some insight into that experience.

In a new interview, 'This Is Spinal Tap' director Rob Reiner shares details about Paul McCartney’s and Elton John’s cameos in the upcoming sequel, ‘Spinal Tap II.’

This Is Spinal Tap II will see the two knights of the realm make shock appearances in the comedy sequel after trailer gave a clue to roles in the movie

Rob Reiner Teases Appearances by ‘Paul McCartney and Elton John' in ‘This Is Spinal Tap' Sequel. Story by Harrison Richlin ... it appears Rob Reiner shows no sign of slowing down.