92-year-old Louise Neistat has been teaching tap dance out of her attic for over forty years. Even at her advanced age she still holds classes six days a week, and imparts her years of experience on her many students.

Before becoming a teacher, Louise danced professionally as a Rockette during World War II. One of the great regrets of her life is that her father never saw her dance with New York City’s famed Radio City Music Hall troupe, because he died of cancer right before her debut.

To honor her late father, Louise and her students put on a full dance show every year, and donate all the ticket proceeds to cancer research.

Louise’s grandson, filmmaker Casey Niestat, has lovingly produced a short film about his nana’s life and cause. Check it out below, and watch to the end for confirmation that Louise’s dance skills are still very much intact at 92.

[via Viral Viral Video]