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Hip hop music was influenced by disco music, as disco also emphasized the key role of the DJ in creating tracks and mixes for dancers, and old school hip hop often used disco tracks as beats. At the same time however, hip hop music was also a backlash against certain subgenres of late 1970s disco. While the early disco was African-American and Italian-American-created underground music developed by DJs and producers for the dance club subculture, by the late 1970s, disco airwaves were dominated by mainstream, expensively recorded music industry-produced disco songs. According to Kurtis Blow, the early days of hip hop were characterized by divisions between fans and detractors of disco music. Hip hop had largely emerged as "a direct response to the watered down, Europeanised, disco music that permeated the airwaves". The earliest hip hop was mainly based on hard funk loops sourced from vintage funk records. However, by 1979, disco instrumental loops/tracks had become the basis of much hip hop music. This genre was called "disco rap". Ironically, the rise of hip hop music also played a role in the eventual decline in disco's popularity.