Polish extreme metallers BEHEMOTH have released the official music video for the song "Sabbath Mater" from their latest album, "I Loved You At Your Darkest".

"I Loved You At Your Darkest" was released last October via Metal Blade Records in North America and Nuclear Blast in Europe.

Unlike "The Satanist", which was primarily recorded in one studio, "I Loved You At Your Darkest" saw its production spread across Poland and the United States. It was produced by the bandmembers themselves, with drum co-production by Daniel Bergstrand (MESHUGGAH, IN FLAMES), mixing by Matt Hyde (SLAYER, CHILDREN OF BODOM) and mastering by Tom Baker (NINE INCH NAILS, MARILYN MANSON). Which is to say nothing of the 17-piece Polish orchestra arranged by Jan Stoklosa and engineered by Tomasz Budkiewicz.

BEHEMOTH will support SLIPKNOT on the "Knotfest Roadshow" headline tour of North America. Other special guests for the trek are VOLBEAT and GOJIRA.

Produced by Live Nation, the 29-city outing will kick off July 26 in Mountain View, California at Shoreline Amphitheater and continue through September 8 where it will conclude with a performance at Cynthia Woods Mitchell Pavilion in The Woodlands, Texas.