Actually he just sample a loop, in the whole song all the vocals are over instruments. Listen "The Light" real close. You can hear the vocals being filtered, it's kinda of like a "ghostly" kinda of feel. I got the orginial Bobby Cadwell song, am just curious. It sounds like he did some majoring phasing on the vocals, then did some extra filtering and panning, then do som EQ to bring the instruments out. Because on the orginial the sythns don't split like that.