KO Ristolainen is a Finnish rock drumming powerhouse behind the legendary German psychobilly/punk band Mad Sin. KO has been playing the drums professionally in a wide variety of bands for over 10 years. He has toured extensively around the world as well as performing at all major festivals. KO’s main band since 2017 has been Mad Sin who continue their relentless touring on all continents. KO plays LDC’s 5A hickory sticks with his signature artwork.