According to the ALS society website, the music is composed by Canadian musician Jim Guthie (www.threegutrecords.com).

For those who haven't seen the commercial, here is the link:
http://www.als.ca/AdCampaign/videos/alseng_runhigh.wmv

> What would you do if it was your last chance...
> Trying to find the song from the commercial ALS please email me if anyone knows