The 70s dance genre is DISCO, which was a popular music and dance style that emerged in the early 1970s. It was heavily influenced by funk and soul music and was characterized by a strong beat, repetitive rhythms, and flashy costumes. DISCO was popularized by clubs and discotheques, and it became a mainstream phenomenon in the mid-1970s. The genre has since evolved into other forms of dance music, such as house and techno.