When Ali Farka Touré died in 2006, his second Grammy award was being flown out to him in Mali by long-standing producer, Nick Gold. Touré had earned his first Grammy in 1994; this second accolade was for 2005’s In the Heart of the Moon, an extraordinary collaboration between Touré – the venerable Malian blues guitarist – and Diabaté, the much younger kora prodigy.