Giddy gigging

What if part of the thrill of a live concert is lightheadedness?

Interested to see that somebody measured CO2 concentration at a gig. 

The reading for healthy fresh air is 450-500.

Maybe I should put on an album and put a bag over my head?!

Just joking, don't put a bag on your head.

However, now I wonder if there's a playlist for putting a bag on one's head?

Since Covid, many famous musicians take significant precautions at their gigs and others are suffering from mystery illnesses that prevent performing.

Yet public health is bad for their business model, since you can only fit so many people into a space and they need more if they want breathing room.