Progressive house is a style of house music that is noted for musical progression within melodies and basslines often containing key elements such as sidechaining. The term was coined by Mixmag editor Dom Phillips. It has similar elements to both electro-house and trance. It has its origins in Great Britain in the early 1990s, with the output of Guerilla Records and Leftfield's first singles (particularly "Song of Life"). In 1992, the dance club Renaissance opened in Mansfield. Its DJs - particularly Sasha and John Digweed - were instrumental in popularizing its early sound. The music itself consisted of the 4-to-4 beat of house music with deeper, dub-influenced basslines and a more melancholic, emotional edge. Often, it featured elements from many different genres mixed together. Song of Life, for instance, has a trip-hop like down-pitched breakbeat and a high-energy Roland TB-303 riff at various stages.