Want to find the heart of rock & roll? You can hear it thundering in Anvil, the Canadian metal band that influenced the likes of Metallica but never hit pay dirt. No wonder lead vocalist Steve "Lips" Kudlow and drummer Robb Reiner are banging heads and egos. Sacha Gervasi's powerhouse doc brings humor and fervent focus to Toronto musicians, supporting their families with day jobs, who won't give up the dream. Ever. Listen to Anvil rip into "Metal on Metal." It's hardcore inspirational.

“Youth Knows No Pain”

“Like on 'Youth Knows No Pain' — we are the ones that should demonstrate, because we can take it,” Likke Li said. “We can pierce ourselves, take Ecstasy, dance all night and still go to work at our McDonald's jobs.” Despite the hedonistic sentiment in the song, the Swedish singer also admitted in hindsight her youth had repercussions. “I remember when I was 18-19 and feeling that I know it all,” Li said. “I always feel that I know it all. But that song is about realizing you don’t, and reflecting, ‘Boy, if I only knew what would follow.’”