looking for a song

[carsten@audrey.informatik.rwth-aachen.de (Carsten Weise)]

Dear fans of Kate Bush,
I hope you can help me in finding a song my girlfriend is 
looking for. She heard it frequently on the radio here in
Germany, but she does not know who the singer is.
The song is sung by a female singer, and I am quite sure
that it is not Kate Bush. But I found it somehow similar
to songs of Kate. So I could imagine that people listening
to Kate Bush also have records of the female singer I am 
looking for. All I can tell you is that the chorus (or at 
least part of it) goes like this:

"...sometimes I turn into a raven, sometimes I'm a fox..."

Any help is appreciated. Thank you.

P.S. I tried this before on rec.music.misc, and the only suggestion
they had was "Ace of Base: All that she wants". This is 
definitely a (_very_) different song :^)
P.P.S. The voice of the singer in question reminds of a girl
which sang for a group called "Fox" (or at least I think that
was their name) in the seventies. Does anyone remember this 
group or the name of their female singer?
--------------------------------------------------------------------------
Carsten Weise                     email: carsten@i1.informatik.rwth-aachen.de
Lehrstuhl fuer Informatik I       voice: ++241/80-21 103
University of Technology Aachen   fax  : ++241/80-21 129
Ahornstr. 55
52074 Aachen - Germany