Sort:  

On the first watch-through, I was convinced that I had mistaken two "real" rock musicians for members of Spinal Tap (the fictional band from the comedy movie "This is Spinal Tap"). I consulted wikipedia and found that I was mistaken in thinking I was mistaken:
https://en.wikipedia.org/wiki/Hear_%27n_Aid

Hear 'n Aid
Hear 'n Aid was a one-time collaboration of various individual hard rock and heavy metal artists in 1985 to raise money for famine relief in Africa. According to Ronnie James Dio's MySpace profile, the project raised $1 million within a year.

But this amp goes to 11. I remember thinking that was cool when the video was first released.