I have to do this speech on Turntablism... 
 
I'm going to touch on... 
 
Phonographs and the Development of Turntables 
Cool Herc/Grandmaster Flash, Breakbeats/Mixers, etc... 
Grand Wizard Theodore and the creation of Scratch techniques.. 
Sampling 
 
And then probably end with how the technology has grown. Digital DJs, etc...But where else should I go? What else should I include?