Both of those shows are very cool to watch, whever you happen to get them from. I picked up mine in a trade.
But people should be aware, there are no official releases of the original Wall performed live. These are bootlegs and most likely will remain bootlegs.
They are worth searching for, but they have also become quite easy to find, thanks to ebay and the internet. Just be careful if/and/or when you pick one up. And don't expect the best quality.

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russman

I didn't grow up with a string quartet either