Zach Sobiech is a 17-year-old musician who was diagnosed three years ago with osteosarcoma, a rare form of bone cancer. With only months to live, Sobiech used music to say goodbye -- moving millions of people with his song, "Clouds."
Media company SoulPancake is helping spread Sobiech's message with a tribute video, featuring a superstar list of celebrities, including Bryan Cranston, Sarah Silverman, Andy Grammer, Colbie Caillat, Jason Mraz, Sara Bareilles, The Lumineers and many more.
Sobiech's version is available on iTunes, and proceeds benefit the Children's Cancer Research Fund.
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