Jamming

Jamming's been around for a LONG TIME...

"Iegor Reznikoff of the University of Paris reports that the most acoustically resonant place in a cave -- where sounds linger or reverberate the most -- was also often the place where the pictures were densest.

And when the most-resonant spot was located in a very narrow passageway too difficult for painting, red marks are often found, as if the resonance maximum had to be signified in some way. This correlation of paintings and music, Reznikoff says, provides "the best evidence for the ritualistic meanings of the paintings and of the use of the adorned caves."

Now I know where Do Wop comes from. :)