Many house DJs also did and continue to do remixes for pop artists. It was incorporated into works by major international artists including Whitney Houston, Janet Jackson, Madonna, Pet Shop Boys, Kylie Minogue and Lady Gaga, and also produced many mainstream hits such as ' Pump Up the Jam' by Technotronic, ' French Kiss' by Lil Louis, ' Show Me Love' by Robin S., and ' Push the Feeling On' by the Nightcrawlers. House has a large influence on pop music, especially dance music. House music initially expanded internationally, to London, then to other American cities, such as New York City, and ultimately a worldwide phenomenon. House was created and pioneered by DJs and producers in Chicago such as Frankie Knuckles, Ron Hardy, Jesse Saunders, Chip E., Joe Smooth, Steve 'Silk' Hurley, Farley 'Jackmaster' Funk, Marshall Jefferson, Phuture, and others. By early 1988, House became mainstream and supplanted the typical 80s music beat. It was created by DJs and music producers from Chicago's underground club culture and evolved slowly in the early/mid 1980s, and as DJs began altering disco songs to give them a more mechanical beat. House is a music genre characterized by a repetitive four-on-the-floor beat and a typical tempo of 120 beats per minute as a re-emergence of 1970's disco.
