Christensen has played roles in musical plays as Spellemann på taket (Fiddler on the Roof) and Spring awakening at Oslo Nye Teater.
He was hired by Oslo Nye Teater in the autumn of 1981 and had his debut in the play "Vikinger" by Johan Borgen.
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She made her stage début on Oslo Nye Teater (Centralteatret) in 1997, playing the title role in Goldoni's comic opera Mirandolina.