Zach Sobiech is an ordinary 17-year-old kid living in Minneapolis. So why are Ashley Tisdale, Colbie Caillat, Anna Faris, Jason Mraz, Sara Bareilles, Jenna Fischer, The Lumineers, Rachel Bilson, Ed Helms, Phillip Phillips, Andy Grammer and dozens of other celebrities literally lending their lips to lift his spirits? Because Zach did the same for millions of people when his original song ‘Clouds’ went viral on YouTube.

You see, Zach has been diagnosed with osteosarcoma and only has weeks left to live. A few months ago, he uploaded ‘Clouds’ to YouTube as his goodbye to friends and family after a grim diagnosis. (Watch Zach’s original music video here: http://www.youtube.com/watch?v=sDC97j6lfyc). 2.6 million views later, Zach was a viral sensation being signed by BMI with one of the catchiest tunes ever heard by human ears under his young belt.

But here’s the sad truth: Zach is still going to die. And nothing will stop that. So Rainn Wilson’s SoulPancake team put its ‘My Last Days’ crew to work to tell Zach’s story through the music video below.

Enjoy: