Ikenai Rouge Magic

Discovered this collaboration between Imawano and Ryuichi Sakamoto from '82. I assume the single was a smash, as there's such a huge amount of video footage related to it on Youtube. I can't find any real information about the collaboration, or a vinyl-rip of the actual music. Some user comments (which I'm reading via Google Translator, Japanese to English) refer to an entire album of music by the two, but all I can find are mp3-to-Youtube rips of the single, the instrumental, and this fantastic version:



Many television performances of the song:
http://www.youtube.com/watch?v=IJ0JpHyPF4c
http://www.youtube.com/watch?v=TJt176hzXgs
http://www.youtube.com/watch?v=PaDnUnNdE5w
Version with Oikawa Mitsuhiro standing in for Sakamoto: http://www.youtube.com/watch?v=CMiKBG9R42U

Commercial: