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Z Rock is an American comedy television series, which aired on IFC in the United States. The show is a semi-scripted comedy and is based on the double life of a Brooklyn band, ZO2. By night, they are a hard rock band but, to pay the bills, they are the "Z Brothers" by day, playing at children's birthday parties. ZO2 consists of brothers Paulie Z, David Z and their childhood friend Joey Cassata portraying fictionalized versions of themselves. imdb.com