The film discusses the traits and originators of some of metal's many subgenres, including the New Wave of British Heavy Metal, power metal, Nu metal, glam metal, thrash metal, black metal, and death metal. Dunn uses a family-tree-type flowchart to document some of the most popular metal subgenres. The film also explores various aspects of heavy metal culture.

Global Metal
2008
7.3/10

Iron Maiden: Burning Ambition
2026
8.6/10

Iron Maiden: Flight 666
2009
7.7/10

Foo Fighters: Back and Forth
2011
7.6/10

It's Never Over, Jeff Buckley
2025
7.8/10

Miss Americana
2020
7.8/10

20 Feet from Stardom
2013
7.2/10

The Last Waltz
1978
7.7/10

Janis: Little Girl Blue
2015
7.3/10

The Greatest Night in Pop
2024
7.9/10

Coldplay: A Head Full of Dreams
2018
7.8/10

God Bless Ozzy Osbourne
2011
7.9/10

Gimme Shelter
1970
7.3/10

Music by John Williams
2024
8.0/10

The Sound of 007
2022
7.3/10

The Who: The Kids Are Alright
1979
7.3/10

Taylor Swift | The Eras Tour | The Final Show
2025
7.9/10

Thriller 40
2023
8.7/10

The Last Repair Shop
2024
7.5/10

Supersonic
2016
7.4/10
Joanna Lumley Meets Will.I.Am
2014
0/10