Draft:KO Ristolainen

KO Ristolainen (born Keijo Ristolainen; 28 September 1984) is a finnish drummer who is primarily known as the drummer of german rock and roll band Mad Sin.

He is also a drummer and co-founder of finnish rock band Walkalone.

Ristolainen has been a touring and live drummer for various european rock, psychobilly and punk bands and artists since 2010s.

Ristolainen endorses Pearl drums, Sihi cymbals and London Drumstick Co. drumsticks.