The rise of disco in the 1970s made dance music popular among the public. By the late 1970s, electronic dance music using synthesizers and drum machines was emerging. In the 1980s, house music developed from disco in gay clubs in New York and Chicago, using catchy melodies and four-on-the-floor beats. Also in the 1980s, techno developed in Detroit using electronic rhythms and sampled sections of old records. Common conventions in dance music videos include themes of freedom, clubbing, dancing, and sexuality; strobe or special lighting; quick cuts and camera angles matching the beat; and locations in clubs or festivals.