Black Widow
... that Iggy Azalea's "Black Widow", co-written by Katy Perry, was originally intended to be a duet with both singers?
... that <a href="./Iggy_Azalea" id="mwCy0" rel="mw:WikiLink" title="Iggy Azalea">Iggy Azalea</a>'s "<b id="mwCy4"><a href="./Black_Widow_(Iggy_Azalea_song)" id="mwCy8" rel="mw:WikiLink" title="Black Widow (Iggy Azalea song)">Black Widow</a></b>", co-written by <a href="./Katy_Perry" id="mwCzA" rel="mw:WikiLink" title="Katy Perry">Katy Perry</a>, was originally intended to be a duet with both singers?