Out-sized Performances

We've all seen that one time a group or musician just goes over the top.

Maybe one of the better known examples is Santana's Soul Sacrifice at Woodstock. Lesser known might be Hocus Pocus by Focus on the Japanese TV show where they had to do a 6 minute song in 4.

Oddly both of those examples didn't have much of a feedback loop from the crowd. I would think others do.

Also in both of those the musicians were not happy about it. A control thing?

I'm old so those are two examples that are old but I'd like to see others from any era or genre, or if you saw it live.