Christopher John Joannou (born 10 November 1979) is a Macedonian Australian musician, best known as the bass player for the successful alternative rock band Silverchair. Born in Newcastle, New South Wales, he has a twin sister and an older sister. He has a nephew and two nieces. He was the first of the three band members to cut his long hair short. Joannou was nicknamed 'Lumberjack' by Silverchair fans for his love of trees, and plaid shirts. Chris' bandmate Ben taught him how to play bass guitar, making him the only Band member who did not know how to play an instrument. However, he learned quickly.