Lumières Audibles by Jacques Dudon

"In his ‘photosonic’ process, Dudon shines light through a series of semi-transparent, rotating discs that slow and modify the light waves’ frequencies; the resulting waveforms are picked up by photoelectric (solar-power) cells connected to standard analog amplifiers."
Kala Pierson, review in 'New Music Connoisseur Magazine'

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This is very interesting music to say the least. I've never heard anything like it. There is more information about the album and Jacques Dudon at http://continuo.wordpress.com/ The incredible blog where I in initially found this album.