Billy Joel, the legendary musician, expressed immense pride as he celebrated the graduation of his 10-year-old daughter, Della, from elementary school. In an Instagram post, he congratulated her on becoming a middle schooler, sharing a collection of cherished photos that highlight her growth over the years. Della has already shown an interest in performing, having taken the stage with her father multiple times, including a memorable performance at Madison Square Garden when she was just three years old. Joel, 77, is currently managing a health condition known as normal pressure hydrocephalus (NPH), which affects his balance and has led him to prioritize physical therapy and cancel concert dates through July 2026. Despite these challenges, he remains optimistic about his recovery. Additionally, Billy Joel has another daughter, Alexa, from his previous marriage, who has also followed in his musical footsteps.