Zach Sobiec was given just only months to live when he is diagnosed with a rare form of bone cancer. He was able to live his last few months with a relative degree of normalcy in his life. As the days passed, he decided to write this song to say goodbye. It immediately became an internet sensation, and before too long, other people were making their own covers of his song. His original is included in the video below. Zach’s song touched the lives of so many people, that a tribute video was made in his honor, which included celebrities such as (Bryan Cranston, Sarah Silverman, Chris Pratt, Jazon Mraz, Ed Helms, and The Lumineers.
Source: Woolly Rhino Productions