History of hip hop dance

Origin theory 1

Apparently on August 11, 1973 DJ Kool Herc, a building resident, was entertaining at his sister’s back-to-school party, and tried something new on the turntable: he extended an instrumental beat (breaking or scratching) to let people dance longer (break dancing) and began MC’ing (rapping) during the extended breakdancing.

JABBAWOCKEEZ | Performance @ HHI's 2012 World Hip Hop Dance Championship Finals

Origin theory 2

It is believe that hip hop dance came from James browns dance in a video of him singing get on the good foot.
James Brown - Get On The Good Foot