Grzegorz Welizarowicz – bass guitarist, drummer, actor, English graduate. The author of music to dance theatre performances, including Eden by Dada von Bzdülöw Theatre and Quad. Version 6 by Okazjonalny Theatre (currently: Sopot Dance Theatre). In 1993–1998 a member of EGO band. In 1998–1999 he collaborated with Croffessima band. Since 1994 a musician and author in MORDY band. Since 1998 he has played in Chlupot Mózgu band – with Jacek Staniszewski and Przemysław Dyakowski. In 2000–2001 a student in African Drum Class in San Diego, run by Nana Yaw Asiedu, an Afro-American musician collaborating with Herbie Hancock and Quincy Jones. In 2001–2006 he played with Larry Okey Ugwu’s Ikenga Drummers. He played concerts in Poland, Denmark, France, Germany, California. Since 2005, together with musician and composer Zbigniew Zibi Bieńkowski and dancers and choreographers Magdalena Jędra and Anna Steller, he has co-created Good Girl Killer in Tricity.