Electro house is a subgenre of house music influenced by 1980s music. Its origins are obscure, with sources claiming varying influence from 1980s-electro, electroclash, pop, synthpop, and tech house. It has subsequently become a hard form of house music. The term has been used to describe the music of many of the world's top DJs, such as David Guetta, deadmau5, Skrillex and Tiësto.