If I visit London soon I will have to go and see this exhibition of Brazilian culture from 1960s onwards at the Barbican. It includes Assume Vivid Astro Focus which was at Liverpool Tate last summer.
Report by Adrian Searle in the Guardian...

"Snatches of electronica drift from Assume Vivid Astro Focus's mind-mangling disco/screening booth on the mezzanine. The languid plaint of Caetano Veloso, singing Alegria, Alegria (Joy, Joy) during a 1967 music festival - at a defining moment in Brazilian popular culture - vies with the weekend dads with their kids in tow, as they play in Oiticica's installations."