who is singing?

I really like Honda's commercials where some average joe or jane enters a car room floor and falls in love with a car. I don't have a car and I don't care about cars. But I do love the choirs that accompany these individuals' raptures. My only problem is that, first, they only sing a few seconds of their song, and second, I can't find their complete version online. The songs are already out in the public, the choirs probably are known by someone, but unlike other songs that I've discovered through their composers' YouTubes, I haven't figured out how to find the full choral versions of these.

Here is the link to Honda's fragments. I have a sad feeling that Honda didn't bother to record full versions, but if you know something different, please do post a comment.
 

A fragment: