Expo 70, held in Osaka, was a pivotal event for the Japanese people and their relationship with the rest of the world, demonstrating both the nation's ongoing economic recovery from World War Two and the creative spirit of Japanese society and it's artists.A series of performances, billed as 'Night Events' were held at the Expo; the most radical of these was 'Beam Penetration and Mad Computer, plus the Minimal Sound of Motorcycles', but it's anti-establishment feel and general madness took the Expo organizers by surprise and it was cancelled after only one night, despite being scheduled for a longer run. An air of myth developed around the event, but a recording of the event has been discovered and this release is the result.This release comprises a CD, a 10-inch record with fold-out sleeve and large obi, plus fascinating notes in Japanese and English by Kenichi Yasuda, an expert on Japanese rock music, and Koji Kawasaki, a renowned researcher of Japanese electronic music, as well as rare photos.(*texts cited from the label information)Tracklist:Disc 101. B. Penetrate with beam' [15:15]Disc 10INCHA. Penetrate with beam' [14:52]Disc CD1. 'Beam Penetration' Full Version [45:49]