Other notable variations include Shore changing melodies from descending to rising, a device applied to all the Mordor motivs in Return of the King, but not one of those is labelled a separate theme in the book. He also takes the Nazgul harmonies and sets them to a choir for the Witch King's battle with Eowyn and while that figure is non-recurring, it is a device that he also used with other themes like Thorin's in An Unexpected Journey. There is a two-beat variation of the Mordor Skip-Beat used in "the most frenetic situations" which can be described as a separate chase motiv.