Today's Viral Video is about an amazing teenager named Zach Sobiech. Eight days ago, the 18-year-old died due to complications from a form of bone cancer known as osteosarcoma. Before his death, Sobiech wrote the hugely popular song "Clouds." This Youtube video for "Clouds" was made for Zach and features celebrities singing along to his inspiring music.

"Clouds" has pulled in millions of views and was the number one single on iTunes. Twelve hundred people reportedly attended Zach's funeral.