Dois por Christina. Do click that link if you haven't visited in a while; earlier this year her site was beautifully redesigned and updated with a bunch of great new photos, especially in the Greenpoint section.
Here's Gilberto Gil performing "Domingo no Parque" ("Sunday in the Park") with Os Mutantes as his backing band:
And here he is solo in 1972 performing "Expresso 2222" after returning from two years of political exile in London; you can feel the intense joy and energy of his return to Brazil in both his performance and the audience's :
Have a nice Sunday, Christina!