A piece of music that was composed by laying a giant blank musical score on the ground beneath a tree and waiting for birds to deposit “notes” on it has made its debut, the BBC reports.
Environmental artist Kerry Morrison started her project on International Dawn Chorus Day last July in Liverpool.
It took some time, but she eventually gathered enough deposits to create a melody.
Composer Jon Hering transformed the notes into a musical score.
Morrison told the BBC the 20-minute Bird Sheet Music, which was performed at the Tate Liverpool art gallery, represented the role birds play in the environment.