Replying to Need SONG ID help!!!

Ok I heard a song and MUST have it. The problem is I only know a few lyrics and where I heard it.

I was watching RSN while staying in Vail last week (mtn biking etc...) and I watched a segment of a Warren Miller film where guys are skiing powder and at the end a guy skis off a cliff and then pulls his parachute. There's a guy narrating about how each skier has a dream of perfect powder days etc...

Here are the lyrics I caught:

'...if you want to be free; come follow me'

'...once upon a time in the west'

I know this is a stretch but if somebody could help me that would be sweeeet.

- Brian