Legendary jazz vocalist Tony Bennett has revealed that he’s been living with Alzheimer’s disease for the last four years.

The 94-year-old singer made the announcement via a feature in AARP Magazine, which details Bennett’s struggles with memory loss and his efforts to mitigate the effects of the condition.

Bennett was first diagnosed in 2016. So far, he has avoided many of the worst characteristics of the disease, and his ability to sing has been mostly unimpeded. But author John Colapinto reports that it’s clear that Bennett’s condition has progressed: “Even his increasingly rare moments of clarity and awareness reveal the depths of his debility,” he writes.

In an Instagram post, Bennett wrote: “Life is a gift – even with Alzheimer’s. Thank you to Susan and my family for their support, and @AARP The Magazine for telling my story.”