Answer: set up studios with many turntables and a hired DJ to play.
Explanation:
In the creation of hip hop music in a recording studio. While the term encompasses all aspects of hip hop. The rapping of am MC a turntablist or DJ providing beat, playing samples and scratching using record players and creation or a rhythmic backing track, using a drum machine or sequencer. 
 
        
             
        
        
        
Post war influence of youth made them a valuable consumer market
Electric guitars and how they were played
Appealed to working class
Used technology for creation of music