I used to get this impression from Rammstein's 'Heirate Mich'. Normally when I listen to music, it sounds like the vocals are ontop of the music (if that makes sense). With that song though, it sounded like part of the music was ontop of the vocals instead. I kinda liked the effect, even though it didn't last.
More recently, I seem to have encountered this effect in the songs of a short-lived metal group called 'wraith'.
Is this just my perception playing tricks on me, or is this a real phenomenon with a name?