This is a very infuential video. I often see it referenced when digital audio gets explained.

It is also very insiduously misleading in a way that is hard to fault it for.

That "band limited signal" that uniquely satisfies Niquist theorem? That is an infinite, periodic signal.

No finite (e. g. a song), aperiodic signal can be band limited. That includes any signal with transients.

Well, how big is the difference? How much overhead/error/lookahead is needed to approach the Niquist result? It is never mentioned by people referring to this theorem when talking about audio signal sampling!

And I wish it was mentioned and explained.

A classic. I wish Xiph developed Daala into a fully functional video codec.