You can't imagine. Like most musicians, they were combining influences and reinventing in their own language. At the same time, there was never a question of where the components originated. Listen to the old Tropicalia records and you hear parts connected to parts connected to parts. It's some of the most angular, confusing and ecstatic pop music ever recorded.
Z turns to the guitarist and stops the set.
There is something that he wants to say to the audience. It is difficult to understand Z because his English is so poor. He has split the audience into halves and has them humming each song separately at the same time. It's hard to know what he's talking about. For Z , plagiarism is political.