I was too hasty trying to find a live performance of the first two parts. The performance I linked to doesn't quite do justice to the work. It's good, but there are far better interpretations...
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I think what the uploader says may be trustworthy. This sounds good to me, except for the crackle of the phonograph needle:
https://www.youtube.com/watch?v=3hfdN_IgWYo&t=137s
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Part 2 is amazing:
https://www.youtube.com/watch?v=cBOVn_YpYBU&