Bird poo turned into music by artist Kerry Morrison
Bird droppings on music sheet
Talk about hitting a bum note - an artist has used bird droppings to create a piece of music!
Kerry Morrison put out blank music sheets in Liverpool parks and waited for birds to poo on them.
Music sheet on the street
Composer Jon Hering then used the markings on the scales to create a 20-minute musical score.
The result, called Bird Sheet Music, is being performed by an orchestra at the Tate Liverpool on Sunday.
Morrison said the music represented the role birds play in the environment.
~RS~q~RS~~RS~z~RS~38~RS~)

Check out all our weird and amazing stories!
Video: The week's weirdest news stories
Video: Boy makes awesome Iron Man suit
72-hour football match ends 603-462
Poster 'only children can fully see'
Video: Giant inflatable dog poo!
Big red balloon bounces around Paris
British astronaut in space mission
Can honeybees detect explosives?
Pictures: Beckham's emotional goodbye
Pictures: Eurovision Song Contest in pics
Video: A call from the top of the world
Watch Newsround
Video: Top tips on reducing exam stress
David Beckham's career in pictures
New Game: Play our new Reporter Rush game
New Game: Grab the controls and try Master Control Room
Video: The week's weirdest online clips
Quiz: The week's news headlines
All about our Inventions Competition
Watch Newsround's special programmes