Acid house originated in the mid-1980s in the house music style of Chicago DJs like DJ Pierre, Adonis, Farley Jackmaster Funk and Phuture, the last of which coined the term on his "Acid Trax" (1987). It mixed elements of house with the "squelchy" sounds and deep basslines produced by the Roland TB-303 synthesizer. As singles began to reach the UK the sound was re-created, beginning in small warehouse parties held in London in 1986–87. During 1988 in the Second Summer of Love it hit the mainstream as thousands of clubgoers travelled to mass raves. The genre then began to penetrate the British pop charts with hits for M/A/R/R/S, S'Express, and Technotronic by the early 1990s, before giving way to the popularity of trance music.