Which film - Feiyu Show or Anvil! The Story of Anvil - is a film about a Canadian heavy metal band that was directed by Sacha Gervasi?
Feiyu Show: Feiyu Show () is a 2014 Chinese documentary film directed by Sun Hong. Anvil! The Story of Anvil: Anvil! Anvil! The Story of Anvil:  The Story of Anvil is a 2008 rockumentary film about the Canadian heavy metal band Anvil. Anvil! The Story of Anvil:  The film is directed by screenwriter Sacha Gervasi, in his directorial debut, and features interviews with other musicians who have been influenced by the band, including Slash, Tom Araya, Lemmy, Scott Ian, and Lars Ulrich.
Anvil! The Story of Anvil