LOTR movie question-What are the Haradrim chanting?

When the Haradrim show up on their elephants, what are they singing? Someone suggested Maori. Has anyone ever dug it up or translated? I know Tolkien never really gave them a language the way he did his favorite elf children. That part’s one of my favorite of all time-such an entrance.

It always sounded like haka to me, but I may have imagined that because of the New Zealand connection.

Hmm, that does make sense.

Are you sure it wasn’t this?

(Starts at 0:30)