File:Null - DFM OT2.png

Summary
Yeah, sort of physical glyphic poses, in time with proto-musical vocalizations, synched up. A modern mind might still think "they're dancing, right?" or "is that martial arts?" to see it happening between groups of primates on their way to being people, but it sure doesn't look fun. Anyone not in the group would be ... creeped out. DFM, later DFU, revolutionized all that and turned it, well, cool