I don't know about aussie floyd, but I have seen the machine 4 times most being 2-night shows so 8 times I guess in total. I must say that everytime I see them I am more blown away. the last time I saw them the played a complete night of music from meddle, saucerful, AHM, and some from OBC and more. it was absolutly incredible. was it the acid? possibly, but all in all I was amazed.

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Evidence it once exist
At some point in time
But with no visible proof
It was ever really there...