Monitor-Black Material and Frustrated Animation :(

I work on a project for my school and I’ve faced 2 obstacles while I’m at it.

The first one is to create a material that is monitor-black (I emphasize the monitor because I want to create the material with the glow, the illumation that the screen offers when its black) and all I get is a pitch-black material, far away from the result I wanted.
Example given:

The second one is to create a flatline animation, that will sync with the music played by the game, and it will represent live the music soundwaves graph. Is it possible or I should search for a similar idea?
Example given:

Any suggestion will be highly appreciated. Thanks a lot in advance!