Cryterion is a post-classic rock fusion duo which performed live from 2005 to 2008 featuring the vocals of the very talented Catherine Clarkson and the production and vocals of Frederick Serafim. Catherine's prior singing and acting experience ranges from England's pub circuit to Canadian music festivals and numerous theatrical stages such as the Oakville Performing Arts Centre and Niagara Grand Theatre. Frederick has devoted much of his time to studio work has also performed in nightclubs, concert series and special events over the years. No licensing except upon direct contact with artists.