Hi James
From
http://www.allmusic.com
Techno:
Techno had its roots in the electronic house music made in Detroit in the mid-'80s. Where house still had explicit connection to disco even when it was entirely mechanical, techno was strictly electronic music, designed for a small, specific audience. The first techno producers and DJs -- Kevin Saunderson, Juan Atkins, and Derrick May, among others -- emphasized the electronic, synthesized beats of electro-funk artists like Afrika Bambaataa and synth-rock units like Kraftwerk. In the United States, techno was strictly an underground phenomenon, but in England, it broke into the mainstream in the late '80s. In the early '90s, techno began to fragment into a number of subgenres, including hardcore, ambient, and jungle. In hardcore techno, the beats-per-minute on each record were sped up to ridiculous, undanceable levels -- it was designed to alienate a broad audience. Ambient took the opposite direction, slowing the beats down and relying on watery electronic textures -- it was used as come-down music, when ravers and club-goers needed a break from acid house and hardcore techno. Jungle was nearly as aggressive as hardcore, combining driving techno beats with breakbeats and dancehall reggae -- essentially. All subgenres of techno were initially designed to be played in clubs, where they would be mixed by DJs. Consequently, most of the music was available on 12-inch singles or various-artists compilations, where the songs could run for a long time, providing the DJ with a lot of material to mix into his set. In the mid-'90s, a new breed of techno artists -- most notably ambient acts like the Orb and Aphex Twin, but also harder-edged artists like the Prodigy and Goldie -- began constructing albums that didn't consist of raw beats intended for mixing. Not surprisingly, these artists -- particularly the Prodigy -- became the first recognizable stars in techno.
Trance:
Breaking out of the German techno and hardcore scene of the early '90s, Trance emphasized brief synthesizer lines repeated endlessly throughout tracks, with only the addition of minimal rhythmic changes and occasional synthesizer atmospherics to distinguish them -- in effect putting listeners into a trance that approached those of religious origin. Despite waning interest in the sound during the mid-'90s, trance made a big comeback later in the decade, even supplanting house as the most popular dance music of choice around the globe.
Inspired by acid house and Detroit techno, trance coalesced with the opening of R&S Records in Ghent, Belgium and Harthouse/Eye Q Records in Frankfurt, Germany. R&S defined the sound early on with singles like "Energy Flash" by Joey Beltram, "The Ravesignal" by CJ Bolland, and others by Robert Leiner, Sun Electric, and Aphex Twin. Harthouse, begun in 1992 by Sven Väth with Heinz Roth & Matthias Hoffman, made the most impact on the sound of trance with Hardfloor's minimal epic "Hardtrance Acperience" and Väth's own "L'Esperanza," plus releases by Arpeggiators, Spicelab, and Barbarella. Artists like Väth, Bolland, Leiner, and many others made the transition to the full-length realm, though without much of an impact on the wider music world.
Despite a long nascent period when it appeared trance had disappeared, replaced by breakbeat dance (trip-hop and jungle), the style's increasing impact on Britain's dance scene finally crested in the late '90s. The classic German sound had changed somewhat though, and the term "progressive" trance gained favor to describe influences from the smoother end of house and Euro dance. By 1998, most of the country's best-known DJs -- Paul Oakenfold, Pete Tong, Tony De Vit, Danny Rampling, Sasha, Judge Jules -- were playing trance in Britain's superclubs. Even America turned on to the sound (eventually), led by its own cast of excellent DJs, including Christopher Lawrence and Kimball Collins.
House:
House music grew out of the post-disco dance club culture of the early '80s. After disco became popular, certain urban DJs -- particularly those in gay communities -- altered the music to make it less pop-oriented. The beat became more mechanical and the bass grooves became deeper, while elements of electronic synth pop, Latin soul, dub reggae, rap, and jazz were grafted over the music's insistent, unvarying four-four beat. Frequently, the music was purely instrumental and when there were vocalists, they were faceless female divas that often sang wordless melodies. By the late '80s, house had broken out of underground clubs in cities like Chicago, New York, and London, and had begun making inroads on the pop charts, particularly in England and Europe but later in America under the guise of artists like C+C Music Factory and Madonna. At the same time, house was breaking into the pop charts; it fragmented into a number of subgenres, including hip-house, ambient house, and most significantly, acid house (a subgenre of house with the instantly recognizable squelch of Roland's TB-303 bass-line generator). During the '90s, house ceased to be cutting-edge music, yet it remained popular in clubs throughout Europe and America. At the end of the decade, a new wave of progressive house artists including Daft Punk, Basement Jaxx, and House of 909 brought the music back to critical quarters with praised full-length works.