Billy Joel's family are "hopeful for his recovery"

Alongside a family photo, Alexis - his wife - said on Instagram: "Thank you for the outpouring of love and support. We are so grateful for the wonderful care and swift diagnosis we received. Bill is beloved by so many, and to us, he is a father and husband who is at the center of our world. We are hopeful for his recovery. We look forward to seeing you all in the future (sic)"

Christie Brinkley, Billy's ex-wife, recently wished the music star a "full and speedy recovery".

The 71-year-old model took to Instagram to send her best wishes to the 'Uptown Girl' hitmaker.

Christie said: "Dear Billy ,The whole Brinkley gang is sending you lots of love and good wishes for a full and speedy recovery . I was looking for some cute photos of you and Alexa to send you, when I came across this clip from a recent concert. It made me laugh ..but it also reminded me of all the joy you create, and all the sensational sing a longs you've lead... you turn an arena of strangers into a living room full of friends as we all sway in unison .. I'm sure I'm speaking for everyone in that room when I say please take good care of yourself, we all want you back in that white hot spotlight ,you're OUR piano man

"And we're always in the mood for your melodies And we all hope you're feeling alright!

"We Love You, the kids, me and an arena or two! (sic)"

Billy is currently undergoing treatment and doctors have advised that performing would have an adverse affect on his health at this time.

A statement explained: "Billy Joel has announced that he will be cancelling all scheduled concerts following a recent diagnosis of Normal Pressure Hydrocephalus. This condition has been exacerbated by recent concert performances, leading to problems with hearing, vision and balance."