Thanks for the suggestions!
krabklaw - Yes Valle is really great. I only have ''Garra''. Which other album of his would you recommend?
Marcos Valle (Quarentão Simpático) (1970), Mustang Cor De Sangue (1969), Previsão do Tempo (1973) are all top shelf from the same period as Garra. I think all of his albums are worth hearing though if you're into this stuff.