Listen to JERUSALEM by Ana y Jaime.
It's my understanding (but not being Colombian, one I can't confirm) that Ana y Jaime are a famous folk duo in Colombia, like Simon & Garfunkel or Crosby Stills & Nash.
But being American, I know I had never heard of them when I picked up this album. I'm glad I did, though, because it is fantastic all the way through. This track, which we put on our Christmas CD a couple of years ago, is about my favorite. It's from their debut album, when the two of them (siblings, by the way) were still teenagers. Impeccable.