Once he hears to his heart's content, sails on, a wiser man.
We know all the pains that the Greeks and Trojans once endured on the spreading plain of Troy when the gods willed it so all that comes to pass on the fertile earth, we know it all! Odysseus was curious as to what the Sirens sang to him, so, on Circe's advice, 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.