Walter "Zwol" Zwolinski (aka Zwol or Walter Zwol) is a Canadian musician and songwriter and founding member and front-man for the Canadian rock band Brutus (1969-1976). The band charted a number of Canadian hits including "Ohh, Mama Mama", a Top 3 tune in 1975. Zwol embarked on a solo career and charted two Top 100 hits in the late 1970s. He continues to record and perform live in the Toronto region.
Formed in 1969, Brutus consisted of Zwol as vocalist, Tom Wilson as bassist, Michael Magann on trumpet, Lance Wright on drums, Sonny Wingay on guitar, and Bill Robb on sax and trombone. The band was the opening act for popular Canadian and American acts that were touring Canada.