how is singing a part of the posadas tradition
Las Posadas Individuals may actually play the various parts of Mary (María) and Joseph with the expectant mother riding a real donkey (burro), with attendants such as angels and shepherds acquired along the way, or the pilgrims may carry images of the holy personages instead. Children may carry poinsettias.[12] The procession will be followed by musicians, with the entire procession singing posadas such as pedir posada.[4] At the end of each night's journey, there will be Christmas carols (villancicos), children will break open star-shaped piñatas to obtain candy and fruit hidden inside, and there will be a feast.[4][13] Piñatas are traditionally made out of clay. It is expected to meet all the invitees in a previous procession.
Siren (mythology) Odysseus was curious as to what the Sirens sang to him, and so, on the advice of Circe, he had all of his sailors plug their ears with beeswax and tie him to the mast. He ordered his men to leave him tied tightly to the mast, no matter how much he would beg. When he heard their beautiful song, he ordered the sailors to untie him but they bound him tighter. When they had passed out of earshot, Odysseus demonstrated with his frowns to be released.[32] Some post-Homeric authors state that the Sirens were fated to die if someone heard their singing and escaped them, and that after Odysseus passed by they therefore flung themselves into the water and perished.[33]