The Blue Planet
The Brit Award winner will play the grand piano on the soundtrack to Attenborough's latest BBC show.
Blue Planet presenter urges lifestyle changes "in what we eat and how we live" to tackle climate change.
Glastonbury crowds shocked by unexpected act at final day when David Attenborough took to the stage.
"Almost certainly it won’t be as rich as it was," says broadcaster.
Blue Planet II highlighted the devastating impact of plastic pollution on oceans and their wildlife