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RZW
Juan Sebastián Lach Lau - slach@koncon.nl
 excerpt (3.8mg)
program notes
RZW (2002). The score of this piece was constructed by mapping permutations of 5 sounds against permutations of accent patterns in a 5 meter. The reading of them is made according to their symmetries and when coincidences between both happen, the resulting clash forms a special 'fill in' for the percussion. The structure of the piece has this section as the middle and longest one, surrounded by contrasting sections made in a similar but freer fashion. The electronic sounds were generated in the analog studio from the multitrack recording of the percussion with several passes of processing. The middle part used synthetic sounds of various kinds and the outer parts process the percussion sounds. The computer was used at a later stage to synchronize all the generated electronic parts together and to do the placing and panning in the quadraphonic field. The live performance of this piece has the electronic sounds following the percussion and sometimes the percussion following the electronics, which resembles the process the composition went through. Although the piece is abstract, it has a playful (and even humorous) character.
bio
Born 1970, Mexico City. Began studying piano in 81, studied Mathematics from 89-92 and then composition from 93 onwards. His main teachers have been Juan Trigos (94-95), Víctor Rasgado (96-99) and Ignacio Baca Lobera (99-01). Since 2001 studies composition and sonology at the Koninklijk Conservatorium in The Hague, Holland with Clarence Barlow and Gilius van Bergeijk. He has played keyboards and composed in the experimental-jazz band Psicotrópicos (from 86 to 92) and in rock band Santa Sabina (91-01) with whom he's recorded and produced 6 CD's and made multiple tours in Mexico and United States. He has also composed music for theater, film, video and radio since 88 and his chamber and electro acoustic music has been performed in Mexico, Holland, Spain and Brazil. He is currently playing keyboards in the Improvisers Ensemble in Holland and Poland and in Wako Texas in Mexico.
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