 From 2006 to 2009, he played in the punk rock band Flipper, and in 2011, he contributed bass and accordion to the song "I Should Have Known" on the Foo Fighters' studio album "Wasting Light".Since June 2017 he has played bass and accordion for the band Giants in the Trees.Outside of music Novoselic has been active politically, being involved in the formation of a PAC named JAMPAC (Joint Artists and Musicians Political Action Committee).