This is Spinal Tap (1984)

82 min - Comedy, Music
Spinal Tap, the world's loudest band, is chronicled by hack documentarian Marty DeBergi on what proves to be a fateful tour.
Director: Rob Reiner
Writers: Christopher Guest, Michael McKean
Stars: Rob Reiner, Michael McKean, Christopher Guest, Kimberly Stringer
Filmillion already knows film "This is Spinal Tap"
and it guessed it 40 times.
Celebrity Fact
Marlon Brando and Robert De Niro were awarded Oscar for playing the same role in two movies
All movie descriptions including art are taken from LinkedMDB