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: Flight 666
2009
7.8/10

God Bless Ozzy Osbourne
2011
7.8/10

Foo Fighters: Back and Forth
2011
7.6/10

Miss Americana
2020
7.8/10

The Who: The Kids Are Alright
1979
7.3/10

The Last Waltz
1978
7.7/10

Metallica: Some Kind of Monster
2004
7.1/10

Janis: Little Girl Blue
2015
7.3/10

The Greatest Night in Pop
2024
7.8/10

Gimme Shelter
1970
7.3/10

Coldplay: A Head Full of Dreams
2018
7.8/10

Thriller 40
2023
8.5/10

The Last Repair Shop
2024
7.5/10

The Sound of 007
2022
7.2/10

Music by John Williams
2024
8.0/10

Jaws @ 50: The Definitive Inside Story
2025
7.5/10

Dua Lipa: Studio 2054
2020
9.0/10

Supersonic
2016
7.4/10

Rush: Beyond the Lighted Stage
2010
7.5/10
BBC Radio 1's Big Weekend 2019
2019
4/10