There was a song, very melodic, in a BMW commercial sung by a woman about 1 1/2 to 2 years ago. It came on early in the morning in LA.

Was it this commercial?

YouTube - Volkswagon Jetta wedding commercial

Then the song is called "One Million Miles Away" by J Ralph.

(oh, and here's a longer version of the commercial)

YouTube - Volkswagen Big Day

Hope that helps!

not sure if this is it, but I was the writer for a bmw commercial filmed in italy several years back with an original version of the song "lascia ch'io pianga."

http://www.youtube.com/watch?v=Tpj72G12oa4

if that's it, the music was produced by a LA-based music company stemmung. They did a superb job. People contacted us asking where they could buy it for years. On a quick search, the closest thing I found for purchase is this sarah brightman version:

http://www.amazon.com/Lascia-Chio-Pianga/dp/B000TDSOG0/ref=sr_1_2?ie=UTF8&s=dmusic&qid=1255120174&sr=8-2-catcorr

hope that helps!