I taught an octopus piano (It took 6 months) [video]

Clickbait nonsense - one of those 'I did [impractical thing], watch what happens!' channels. He buys an octopus at a fish market and trains it to pull on levers styled as piano keys to get a food reward. By preselecting the tuning of the keys, eventually he gets it to play a few random notes in the same scale as his guitar noodling.

What did you expect, complete arpeggios and site-reading Mozart? In six months he taught a wild animal to go from nothing to understanding how to interact with a complex instrument, and do so with increasing sequences in response to a reward. That's really cool. Your expectations might be a tad high.