The coordinate surfaces of the Cartesian coordinates (x, y, z). The z-axis is vertical and the x-axis is highlighted in green. Thus, the red plane shows the points with x = 1, the blue plane shows the points with z = 1, and the yellow plane shows the points with y = â1.
Generally speaking, rap was started in the Bronx, New York in the 1970âs. Because of personal recollections and the myth-making aspect of hip hop, itâs hard to isolate the exact time and place where rap started or who exactly should be considered the inventor of rap.
As ghettos sprouted up in all big cities, the topics of blues music adapted to the urban landscape, and began to depict life in the ghetto. But blues music was never meant to reflect the rhythm of urban life. De facto, the ghetto remained unsung till the 1970s, when rap was born.