When Hoffman was asked why he waited until he was 75 to make his debut as a director, he answered..."I don't know."

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I'm of two minds about that ending. I can see why Hoffman ended the movie where he did. The music was there to reunite those four people, so the reunion is the thing, not the music. Still, since the whole movie builds up to their singing together, we should have been able to see that. It couldn't have been an easy decision for Hoffman.