Not On the Heep: The Heavy Metal Saga of Lee Kerslake vs Siren: The Voices of Shelley Beattie
Not On the Heep: The Heavy Metal Saga of Lee Kerslake has the higher audience score (10/10 against 6/10 for Siren: The Voices of Shelley Beattie). Not On the Heep: The Heavy Metal Saga of Lee Kerslake is the shorter watch at 1h 34m compared with 1h 43m. Not On the Heep: The Heavy Metal Saga of Lee Kerslake is the older of the two (2023 against 2025). Both are documentary movies, so they suit a similar mood.
Not On the Heep: The Heavy Metal Saga of Lee Kerslake2023
VS 
Siren: The Voices of Shelley Beattie2025
| Not On the Heep: The Heavy Metal Saga of Lee Kerslake | Siren: The Voices of Shelley Beattie | |
|---|---|---|
| Audience score | ★ 10.0/10 | ★ 6.0/10 |
| Year | 2023 | 2025 |
| Length | 1h 34m | 1h 43m |
| Genres | Documentary, Music | Documentary |
| Country | – | United States of America |
| Director | Tayla Tracey Goodman | Irene Taylor |
| Main cast | Eric Singer, Gene Simmons, Paul Stanley, Lee Kerslake, Mick Box | Shelley Beattie, Marlee Matlin, John Romano, Ed Connors, Bill Koch |
Synopsis
Not On the Heep: The Heavy Metal Saga of Lee Kerslake
At Heavy Metal’s dawn, the sun rose to the beat of Lee Kerslake’s powerhouse drumming. Through a career of 50 years and 60 million albums sold, he became a legend. Now he must face the end of his days. He reconnects with lifelong pals from Kiss, Ozzy Osbourne, Def Leppard, Deep Purple and Iron Maiden, and performs one last time with the band he created, Uriah Heep.
Siren: The Voices of Shelley Beattie
Shelley Beattie, a Deaf woman and champion bodybuilder, found fame in the 1990s on the hit TV show American Gladiators, where she competed under the name "Siren" before her untimely death in 2008. While charismatic, gorgeous, and a fierce competitor, Beattie also battled personal demons, struggling with mental illness, addiction, and questions of her own identity. Framed by the insight of another Deaf woman in Hollywood who found herself in the…
Where to watch
Where to watch Not On the Heep: The Heavy Metal Saga of Lee KerslakeWhere to watch Siren: The Voices of Shelley Beattie
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