Have you seen that one where musicians play wind instruments in a mountain stream in Brazil? Here's the whole documentary, with more weird good music: Hermeto Pascoal - Sinfonia do Alto Ribeira (1985)
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Hermeto Pascoal - Sinfonia do Alto Ribeira (1985) - Filme Completo
https://www.youtube.com/watch?v=X1-1HU7D1zg
"Sinfonia do Alto Ribeira (Bagre Cego)", by Ricardo LuaGravado em 1985 no / Recorded in 1985 at thePetar - Parque Estadual Turístico do Alto RibeiraMunicípi...