Now that you've seen Mavis Staples interact with a musical vamp (as described by Wikipedia,) we're back to my definition of “vamp” as a person who gets everyone “all worked up.”

Please watch at least
the first 2 minutes and 25 seconds
of this video before moving deeper into the rabbit hole.

This is Classic Vamping.
Sadly, the most effective style by far.

You'll say, “I don't like it. That sort of thing doesn't work on me. I can see right through it.”

So say we all.

Nonetheless,
it works extremely well.