Wine. Music. Poetry. And the wanton and frenzied indulgence of carnal fancies. These things characterized the hedonistic cult known as the Daughters of Song. Calling them an order of the faithful lends them a legitimacy they do not deserve. The daughters (and sons, though they saw themselves also as "daughters") celebrated Andraste's holy union with the Maker in almost every way imaginable. And it was only the "holy union" they venerated. Andraste's life, her war, her teachings, and her sacrifice were blithely ignored.
At its height, the Daughters of Song numbered in the thousands. They maintained a stronghold in a village called Virelay, in the Fields of Ghislain. Virelay saw a yearly event during which the Daughters of Song paraded carven images of the "Maker's Glory" through the square.
The Daughters of Song were wiped out by the righteous forces of Emperor Drakon during his campaigns to unite all of Orlais. When the emperor's forces sacked the village, the Daughters would not arm themselves and were either killed or captured. The village was destroyed, and the cult never recovered.
—From Before Andrastianism: the Forgotten Faiths by Sister Rondwyn of Tantervale