1520 Sedgwick Avenue, the Bronx, a venue used by Kool Herc that is often thought of the birthplace of hip-hop on August 11, 1973[fifty one][63] DJs for instance Grand Wizzard Theodore, Grandmaster Flash, and Jazzy Jay refined and produced the use of breakbeats, which includes chopping and scratching.[64] As turntable manipulation ongoing to evolve