Vocalist Laura Guldemond (Burning Witches) and Nino Helfrich (SKULL TONE STUDIOS, INNER AXIS, Aeon Gods) have released their new song ‘Alone’ from the upcoming collaboration album ‘Shadow Empress,’ which features 13 of the best female metal vocalists from around the world. Accompanying the new song is an animated 3D lyric video. After furious single releases…