. ♪ ♪ ♪ >>> by all accounts, zach sobiak was dealt a horrible hand, diagnosed with cancer at the age gh his passion for music, zach found peace and purpose in his suffering. he shared that music with the world, and as you will see he made an extraordinary impact in a way that he probably never dreamed possible. music, sports, family. the things most important to zach sobiak. >> zach loved sports from a very young age, he tried all sorts of sports from football to basketball. >> in august of 2009, 14-year-old zach sobiak went for a run that stopped him in his tracks. >> he said mom, my hip hurts. i took him to the doctor, we had tests done. >> you initially think oh, it is a muscle thing. >> exactly, we went to therapy for two months and it got worse. it got to the point where he couldn't bend over and tie his shoes anymore, it was that bad. finally, the physical therapist said it was not working. you need an mri. >> that is when doctors discovered a tumor in his left hip. his mysterious pain was caused by a rare form of bone cancer. >> a small amount of adults are diagnosed in the uni