Repentless

Repentless is an official music video by American thrash metal band Slayer released in 2015. The clip was filmed on August 26 at the Sybil Brand Institute, the women's prison in East Los Angeles. While Slayer performed the track under that punishing sun over an eight-hour period, the "prisoners" had to stage a riot for somewhere north of twelve takes before director BJ McDonnell finally called it a wrap. But that was all pretty much in keeping with McDonnell's brutal vision for the clip, a vision that many in the veteran cast and crew referred to as "more like something for a feature film than a rock band's music video."

The "Repentless" title track is an ode to Slayer's late guitarist, Jeff Hanneman, who passed away in 2013. "I call it the Hannemanthem!" King said of the song. "I wrote that for Jeff. Oh, dude, it's fast as fuck. You don't know what the fuck's coming!"

He added: "It's my perspective of Jeff's perspective. It's what I think... If Jeff wrote a song for himself, 'Repentless' would be it."