So I wanted to listen to some music while testing out stuff and went to youtube.

I have Cortana enabled on my machine and I use Edge. Belive it or not when I pressed play, Cortana asked:

lyrics prompt cortana

This transformed my browser to the complete solo-karaoke mode!

Enable Cortana and check it out:

https://www.youtube.com/watch?v=qj5zT4t7S6c

karaoke mode with edge