It’s hard to express how important The Blackening felt when it dropped on March 27, 2007 – not just to Machine Head, but to all of heavy music. Although the NWOAM was in full swing, with records like Lamb Of God’s Sacrament and Killswitch Engage’s The End Of Heartache leading the way, we had been waiting an age for a real full-blooded, yet arena-bothering metal epic to get festival fields in full voice and act as a gateway for young fans first getting into heavy music. The Blackening delivered just that. Completing the reinvention that TTAOE had hinted at, this was the ultimate two-fingered salute to doubters who had written the band off. Like classic Metallica (indeed, actively invoking their Bay Area brethren in that album title and Hemingway-referencing epic A Farewell To Arms), they shortened the tracklist, trimmed away all fat, maxed-out the riff count and brought to life the timeless imagery of grief and tragedy, love and war, the corruption of politics and the hypocrisy of organised religion. Songs like Clenching The Fists Of Dissent and Halo aren’t epic because of their nine-minute-plus run times, but because they will endure through the metal ages.