Breast cancer survivor and “Hamilton” star Mandy Gonzalez — who played Angelica Schuyler — performed “Breathe,” from “In the Heights,” along with Lin-Manuel Miranda.

“It was always important to me to not let cancer define me or stop me. So, during chemo, I had the privilege to continue my job … eight shows a week,” she said. “And I would never have been able to get through that if it wasn’t for my community.”