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Liza with a "Z" is a 1972 concert film made for television, starring Liza Minnelli, produced by Fred Ebb and Bob Fosse. Fosse also directed and choreographed the concert, and Ebb wrote and arranged the music with his song-writing partner John Kander. All four had recently completed the successful film adaptation of Cabaret. According to Minnelli, Liza with a "Z" was "the first filmed concert on television". Singer sponsored the production, even though producers did their best to prevent the sponsors from seeing rehearsals, fearing they would back out due to Minnelli's short skirts. imdb.com