Rapper, songwriter, and producer most well known as the frontman of the Polish band Slums Attack. He has also cultivated a successful solo career, releasing the #2 albums Na serio and Książę aka. Slumilioner.
He co-founded Slums Attack with Marcin Mackowiak in 1993. They composed their debut demo that same year.
Outside his musical career, he is a judo champion and in 2005, he earned a silver badge from the Polish Judo Association.
He was born Ryszard Andrzejewski in Poznan, Poland.