Every note is one octave plus two notes two high. I've just had a look at the first few lines, the timing is excellent, and if you move everything down two notes plus an octave, the whole song is perfect. Very odd.
Compared to the version on "The Best of Siouxsie and the Banshees" the gap is out considerably and it seems to be graded slightly off key (I know I"m not *that* bad of a singer...)
