Aw man, it didn't even get going yet!
As a technical manifesto (it was for a lecture at Musicians Institute), that version of Purple Rain covers just about everything humans have accomplished on guitar up to that point. State of the art kinda stuff. I'm not a big Petrucci fan, can't listen to Dream Theater for too long before I get fatigued, but I appreciate what that dude is able to do with his fingers. I could watch it just for that, damn the music. He has a Charlie Parker level of precision and accuracy. I know perfection often feels antiseptic and too clean, like a hospital, and this reaches those levels at times, but man, that version of Purple Rain belongs on the Voyager so aliens know not to fuck with us.
And Jimmy, that tone seemed to perfectly pay homage given the context of the song. Did it need more chorus? lewl
But a context-be-damned cover can be pretty fun too:
TLDR: I will pay real money if anyone can find me tabs of Petrucci's Purple Rain.