After Billy Joel revealed that he was diagnosed with the brain disorder normal pressure hydrocephalus (NPH), his daughter Alexa Ray, 39, whom he shares with ex-wife Christie Brinkley, shared a touching tribute to her dad.

Billy Joel has the support of his family, including his ex Christie Brinkley and their daughter, Alexa, amid his diagnosis with a rare type of dementia.

Alexa Ray Joel — the daughter of the “Piano Man” and his ex-wife, model Christie Brinkley — took to Instagram on Sunday (May 25) to thank fans for their support and share an uplifting message after her father revealed he had been diagnosed with normal pressure hydrocephalus (NPH), a type of brain disorder.