A film about a man looking for his broyjer. He keeps appearing in various stages of decay.a voodoo witch. A cursed policeman always chased by dogs.set in the deep south on the bayoux. Theme tune was istanbul not constantinople. Might be 1980s

I don't recall that song in this, but some of your description matches this:


Netherworld (1992)
Netherworld (1992) - IMDb (http://www.imdb.com/title/tt0104987/)