The birth of Tropicalismo. Fusing pop rock and avant garde music. Which was hated by the Brazilian military government and by marxist students... Music in so many places then was a big deal and often a dangerous undertaking.
Below Sept 1968. Studio and live version of "It is forbidden to forbid." I have never heard this until just now. I suggest reading the Wiki section about this. It's definitely worth it. The live section is incredible. I'm pretty sure the live performance starts around 5:40.
He was arrested along with Gilberto Gil in 1969. Spent 3 months in jail and Forced into exile he went to London.
Live in Lisboa in exile
Let's bring in the wonderful Gal Costa to the party
So this is pretty amazing. A live stream today Aug 7th for his birthday!!
He comes on at 5:49