 This maqam is appropriate not due to the content of the parashah, but because this is the parashah that falls on the Shabbat prior to Tisha B'Av, the date that marks the destruction of the Temples.Devarim is always read on the final Shabbat of Admonition, the Shabbat immediately prior to Tisha B'Av.That Shabbat is called "Shabbat Chazon", corresponding to the first word of the haftarah, which is Many communities chant the majority of this haftarah in the mournful melody of the Book of Lamentations due to the damning nature of the vision as well as its proximity to the saddest day of the Hebrew calendar, the holiday on which Lamentations is chanted.