The song is totally trance and could come with its spherical sounds also from the "Ray of Light" album.
The record company advertises that this is a song for a sunset on the beach or while driving. But I agree completely, the song also fits night driving in the car.
Madonna's voice is very melancholy on that track. Please two- or listen three times, then you are fascinated by this song and then listen to it again and again at least 10 times in a row! Caution: highly addictive!
So: Buy and chill out !!! Perfectly and you can let his mind wander!