Trance music originated in the German techno and hardcore scenes of the early 1990s. It emphasized brief and repeated synthesizer lines with minimal rhythmic changes and occasional synthesizer atmospherics, with the aim of putting listeners into a trance-like state. A writer for Billboard magazine writes, “Trance music is perhaps best described as a mixture of 70s disco and 60s psychedelia”. Derived from acid house and techno music, it developed in Germany and the Netherlands with singles including "Energy Flash" by Joey Beltram and "The Ravesignal" by CJ Bolland. This was followed by releases by Robert Leiner, Sun Electric, Aphex Twin and most influentially the techno-trance released by the Harthouse label, including the much emulated "Acperience 1" (1992) by duo Hardfloor. Having gained some popularity in the UK in the early 1990s it was eclipsed by the appearance of new genres of electronic music such as trip hop and jungle, before taking off again towards the end of the decade and beginning to dominate the clubs.