Female voice: Madonna singing Vogue. Sound comes from behind and left of seating position and goes to right and behind right speaker at the beginning. At the end, "Vogue" repeats 4 times, in front of you, closer, to the left and right of you, then behind.
Deep Forest Walk in the Desert plays with phase to be center stage, in front of the speakers, then beside and behind alternately. Seems to remain independent of speakers altogether, and that was only an mp3 version.
For me sound stage depth encompasses a larger area than my listening space.