The directors of "Billy Joel: And So It Goes" recently opened up about the making of the new HBO documentary and provided an update on the legendary singer’s health.

The "Piano Man" singer canceled a number of summer shows after being diagnosed with the brain disorder normal pressure hydrocephalus.

A long time friend and collaborator of Billy Joel has said the 76-year-old singer songwriter is “doing very very well” after his diagnosis with a rare brain disorder and that “all arrows point to him making a full recovery.”