Sting introduced 'Every Breath You Take' by way of a simple demo, consisting of himself singing over a Hammond organ part that would subsequently be replaced by Andy Summers's guitar (keyboards were never the strong suit of this band). The demo had been recorded in a small eight-track suite at North London's Utopia Studios and, according to Hugh Padgham, provided a solid delineation of the song in terms of the main riff, the vocal melody and the already-completed lyrics.

 

From http://www.soundonsound.com/sos/mar04/articles/classictracks.htm

 

I always wondered what this demo sounded like and if  it still around somewhere.