The Royal Philharmonic Concert Orchestra swapped woodwind for water, to highlight the importance of H2O for the charity WaterAid.
Members of the world famous orchestra did their own versions of One Direction, Katy Perry and Taylor Swift hits - using water glasses.
The exclusive performance on the banks of the Thames in London, involved less Johann Sebastian Bach, and more Gary Barlow, in a thoroughly modern display.
"The talented musicians of the Royal Philharmonic Concert Orchestra have really helped bring water to life through music today," said WaterAid's Chris Wainwright.
"Today there are over 760m people without access to safe, clean water - a human tragedy that results in the needless deaths of over of 2000 children each day.
"This most basic of necessities is the one thing that changes everything for the world’s poorest communities.
"We hope that the WaterAid H2Orchestra not only shows the importance of water, but encourages people to support our mission - to bring safe, clean water to everyone everywhere by 2030.”
The group spent an incredible 174 hours composing, rehearsing and practicing the pieces, but they more than happy to do it for such a good cause.
"We were thrilled to work with WaterAid to provide this one-of-a-kind concert for London," said musical director Ben Pope.
"It was a new challenge for us making sure that these well known songs translated beautifully when played with water.
"Water is the world’s most valuable and versatile resource and we hope we have helped highlight this through our music.”