MOVIEThough Can bassist and cofounder Holger Czukay held up the low end in the group's unsurpassable rhythm section, he was also the architect of Can's seminal sound in more subtle ways. A student of preeminent avant garde composer Karlheinz Stockhausen, Czukay was constantly experimenting with tapes and with non traditional musical implements like radios and Dictaphones. His Futurist fiddlings eventually forced Can to surrender bass duties to Rosko Gee as