John Keith Wozniak is an American musician, best known as the lead singer, guitarist and songwriter of the band Marcy Playground. He is the son of Robert Wozniak, a developmental psychologist dad, and Nora Wozniak, a free spirited Bohemian mother.
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Buy Discography: 
| Play | Soundtrack | Movie/Serie | Type | Buy song | |
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| Sex and Candy | Being Erica | composer |
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| Sex and Candy | Zack and Miri Make a Porno | writer |
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| Sex and Candy | Little Fires Everywhere | writer |
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| Saint Joe on the School Bus | Daria | writer |
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| Sex and Candy | Back in the Day | writer |
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| Sex and Candy | Workaholics | writer |
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| Sex and Candy | The Affair | writer |
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| Sex and Candy | Hightown | writer |
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