I have two Egyptian Maus. One of them, Phinneas, does the normal Mau "chortle" and talks a bit but not overly. (He is, however, the world's loudest purrer. Seriously, it can wake you up. lol.)
But his brother, Azizi? Good Lord. He is the one tragically yowling from random places in the house for no discernible reason. Total "Song of my People". And he is LOUD. Like wake the dead loud. With so much Angst. You would think his life was one big torment. Even his own brother seems to do the cat version of an eye roll over his laments.