DESCRIPTION:
Laptop Orchestra with Ko Ishikawa live performance at Kennedy Center, Washington DC, 2008 Feb. 9th & 10 th. All duration: 70 mn

Third movement : "Six parallel waves" duration: 5mn

Since 2002, Philippe Chatelain has developped the electronic music project laptop orchestra - a research on realtime composition based on an effective interdependance between performers through a local network. Using an open score with 3 levels of indications that allows the guest musician (generally an acoustic instrument), the six laptopers and the network matrix to interact and produce a "music of changes" based on probabilities, high degree of transformations, and a chain reaction system.

The sound is ouptut on 6 autonomous channel scattered around the audience. Performers play on monaural speaker placed next to them.

The guest musician, here Ko Ishikawa (sho), is producing the source material sent to the matrix 's network. The matrix roots the sound to the laptops according to the score or an algorythmic calculation based on the network activity. A multiplicity of possible moving connections turns the network in a system of high instability.

For the visual part, a second computer is used for each laptoper and analyzes the sound output to generate sound visualization according to defined processing patterns. A collection of patterns is developped for each movement of the concert (six movements in total).

laptop orchestra members are

- for the music (realtime processing) : Go Taneda, Mathieu Chamagne, Keiichiro Shibuya, Christophe Charles, Satoshi Hattori, Philippe Chatelain

- for the video (realtime processing) : Daito Manabe, Ken Furudate

contact: info[at]laptoporchestra.net
http://laptoporchestra.net