Irving Koulen became Metronoom in 1999 born in Rotterdam. And raised within the region he co-founded Hoekselijn and he was a notorious MC within the Drum & Bass scene while remaining underground. He shared stages with Adi J, Aphrodite, MC Noia, Optiv, Ed Cox, Stivs and a common host with the Hague & Rotterdam area when it came to Dubstep and Drum & Bass events. He released Tunnels of Zion together with RK9 in 2017. Notorious for his MC skills, tight bars, mic control & feeling with the crowd after 20 years of experience this an MC of class.