Ostara is a British folk music group, "described in the musical press as a neo-folk / pop music hybrid", founded by Richard Leviathan (born Richard Levy) and Timothy Jenn, as a change of name and stylistic direction from their previous band, Strength Through Joy. Jenn left the band in 2001. Guitarist Stu Mason, drummer Tim Desmond, and former Bronski Beat/Communards bassist Dave Renwick left the band in 2010, as work was due to start on a new album. Leviathan is now the only member of the band. Finnish musician Kari Hatakka, known as the singer of the band Waltari, played synthesizers on some Ostara tracks.