I hadn't seen Once Upon A Time In The West in probably 25 to 30 years ago. At the time I thought it was worth seeing, but this time I caught more things than the last. It does have it's weak moments, but overall it is well worth watching.
By the way, one item that I picked up on this time was the fact that when the harmonica is playing, even from the very beginning, that is the main anti-hero playing it. Which explains why the three assassins at the begin turn around, after having initially given up.
And Leone's directing is outstanding. He plays with sound and vision throughout this motion picture, quite good!
It is one of those films that I might watch for a third time. I don't have many of those.