When the technology became cheaper, many people started experimenting with sounds. They began to use vinyl turntables and samplers to mix up music and create new tunes.
Listen to this example of ‘rapping’ over a rhythmic beat.
Hip-hop emerged from the African American community, following the traditions of spoken word poetry and rhythmical singining of African performers. This tradition combined with new available technologies lead to the creation of rhythmic music over which people spoke rhythmically (rapping).
By 1992 Hip-hop was so popular that it completely took over the pop charts and has become a standard form of popular music, with many famous performers and many many famous tracks.