Since 2008 Oliver L. better known as Hierro plays every year on the legendary Nature One festival as a Fusion Club resident and elates the audience with his energetic sets. Musically he stands for a mix of Tech- House and Techno, primarily you can categorize his sound first of all electronic, individual and full of astonishing effects. In the beginning of 2013 Hierro founds his own Label - Monoton:audio with his long term friend Michael Kruck.