Happy hitmaker Pharrell Williams has created a unique musical composition, 100 Years - The Song We'll Only Hear If We Care, for cognac brand Louis XIII, aiming to raise awareness of rising sea levels.

The track is being stored in the brand's cellars for the next century until its 2117 release, and is destructible when submerged in water, so will only be heard if sea levels haven't risen too much in that time. Williams commented 'I love the fact that LOUIS XIII thinks a century ahead. We should all do the same for the planet. We have a common interest in preserving nature for the future. Each bottle is the life achievement of generations of men and women. It's all about legacy and transmission'.