 Psychedelic hip hop emerged at the end of the 1980s as rappers began to sample mellower grooves, with De La Soul's debut album "3 Feet High and Rising" (1989).The rave scene emphasized house, acid house and techno.The rave genre "hardcore" first appeared amongst the UK acid movement during the late 1980s at warehouse parties and other underground venues, as well as on UK pirate radio stations.