THE MATRIX was built in an obscure record shop (Kareem Abdul-Jabbar found it) in the shimmering Brazilian port city of Salvador (above per opening, old town and shimmyin' final). It began with artists above and in MATRIX RADIO — one of The Guardian's "10 best music radio stations around the world" — and moved on to universality. Music & words above by Assis Valente of Santo Amaro, Bahia: "The time has come for these bronzed people to show their value...". Video by Betão Aguiar