Twenty years ago, Slipknot released an album that would change the game for good. Iowa, the band’s second LP, arrived to near-universal acclaim, its 14 tracks of gut-wrenching nu-metal marking a whole new high-point for a genre that was already in fine health. What’s most impressive about Iowa, though, is how it’s stood the test of time, and still manages to sound as vital today as it did upon release. To celebrate its 20th anniversary, we’ve set ourselves the unenviable task of ranking every song on this classic album from worst to best. Knives at the ready, maggots… 14. (515) Serving as an atmospheric taster of the chaos to come – in a similar vein as the sampled beginning to their 1999 self-titled debut – (515) may be little more than an intro track, but it sure...