Jonathan Cohen On paper, the prominent use of sensitive American singer-songwriter music from the 1970s and ‘80s in a modern Norwegian romantic comedy might seem rather incongruous, if not downright anachronistic. But five decades on from some of their biggest successes, Art Garfunkel, Todd Rundgren, Harry Nilsson and Christopher Cross are back on the big screen helping soundtrack Danish/Norwegian director Joachim Trier’s acclaimed “The Worst Person in the World,” which is nominated for best original screenplay and best international feature film at the upcoming Academy Awards.Co-written by Trier and longtime collaborator Eskil Vogt, “Worst Person” has already won best foreign language film from the New York Film Critics Circle and garnered Renate Reinsve the best actress award at Cannes.