This organ will play one composition until 2640

HALBERSTADT, Germany (AP): A small organ in eastern Germany is the headliner of the world’s slowest concert. It has been playing the same piece of music by composer John Cage at a glacial pace for nearly 25 years. A rare chord change on Wednesday – from seven notes to eight – represented the completion of about 4 per cent of the 639-year endeavour of the John Cage Organ Project Halberstadt.