Popular American musician, Billy Joel, has been diagnosed with brain disorder.

The singer, song-writer and pianist known for his 1973 global hit; “Piano Man” made this known in a statement issued by his management on his Instagram page to cancel all his upcoming tours.

Billy Joel was diagnosed with Normal Pressure Hydrocephalus, NPH, a brain condition that occurs after cerebrospinal fluid builds up in the skull and presses on the brain.

Billy Joel is 76 years old.