Renowned Japanese composer - Ryuichi Sakamoto - dies at the age of 71

The renowned Japanese composer and producer - Ryuichi Sakamoto - has died at the age of seventy-one. He had fought a long battle with cancer. He was a pioneer of electronic music - but became internationally famous as a film composer. He was the first Japanese musician to win an Oscar. The BBC's Tim Allman looks back at his life and career.