Video of the 7,200 people singing Zach Sobiech's song "Clouds" together at the Mall of America was posted online Friday.
On Thursday night, school choirs, church choirs, groups and families packed the mall's rotunda to honor the memory of the Minnesota teen who inspired people across the world with his music while facing the end of his life.
Sobiech died in May of 2013 at the age of 18, after four years of battling osteosarcoma – a rare bone cancer.
Before he died he wrote the song about facing death as a message of hope and the song quickly went viral.
Thursday's event at the Mall of America was part of the KS95 for Kids Radiothon, which benefits KS95 for Kids, Gillette Children's Specialty Healthcare and Children's Cancer Research Fund.
Other performers included Sounds of Blackness and Sammy Brown.
KS95 also held the event last year at the mall, here is the video from that event.
Proceeds from "Clouds" sales are going to the Zach Sobiech Osteosarcoma Research Fund, which has raised more than $912,000 to date.
Here's the original version of "Clouds":