A joyful sashay through Brazil's extraordinary musical heritage is infused with a social message and a warning over the dangers of climate change as Rio de Janeiro draws back the curtain of the 2016 Olympic Games with a highly charged opening ceremony.

Brazil unfurls a vast canvas celebrating its rainforest and the creative energy of its wildly diverse population in welcoming the world on Friday to the Olympic Games in Rio de Janeiro, all to the pounding beat of samba, bossa nova and funk.