Captain von Trapp and Maria (Christopher Plummer and Julie Andrews) dance the Ländler (or Laendler) in 1965’s “The Sound of Music”.Plummer made no secret of the fact that he intensely disliked working on this movie. He was known to refer to it as “The Sound of Mucus” or “S&M” and likened working with Andrews to “being hit over the head with a big Valentine’s Day card, every day.”Nonetheless, he and Andrews remained close friends until his death. Andrews claimed that Plummer’s cynicism probably h