And then it came. When they launched into ‘You Made Me Realise’ you could sense the frisson of recognition throughout the crowd, a sense of ‘This is it. Cover your ears’. And then five minutes in, the song slowly shifts down a gear, a low rumble kicks in and then they crank it up again until we are completely immersed in the mercilessly protracted mid-section of sheer white noise (on the two nights I saw them, the ‘holocaust’ section went on for at least thirty minutes). Odd sensations take over. You can physically feel the soundwaves coming from the stage. A strange curdling in your stomach. A vague light-headedness as your eyeballs are bombarded by the odd visual imagery and the fierce strobe lighting. They kick back into the rest of the song on drummer Colm O’Ciosoig’s cue for a while and then that’s it. They depart with the whirring, coruscating swirls of ghostly feedback whizzing around the circular confines of the Roundhouse. There’s no goodbye and no contrived encore which is always a very good way of keeping your mythic status intact. Incredible.