A Minnesota radio station did something truly special.
A group of 5,000 people gathered at The Mall Of America on Friday.
They came together to perform a song called "Clouds," it was written by Zach Sobiech.
Zach was a 17-year-old from Minnesota who was diagnosed with a terminal form of bone cancer at 14. As he ran out of any possible treatments to battle the cancer, he wrote "Clouds" as a goodbye for friends and family.
So on Friday, Minnesota decided to say goodbye to Zach.
