Song of the Spheres- The Sirens

I begin to sing on top of the pile of bones that I have been standing on for what seems like forever. The sun beats down on me as I look across the shimmering water, and am surprised to see a ship coming our way. Who are these people? I sing with the other sirens and fill the air with a beautiful song, trying to curse the men that are intruding our land. I peer at the men on the ship, hoping that they will become enchanted. However, the men push forward, looking unaffected by our song. The only man that looked somewhat dazed was the one tied to the mast of the ship. He was screaming out orders to his crew, yet none of them seemed to notice. How? I tried to focus and started to sing the Song of the Spheres, but still, the men did nothing. We made the sounds of the beating of a swans wings, the sound of the sea, the moan of the wind, and the rhythm of the passage of the seasons all join in harmony. Even after this, the men continued to come closer to our deleted island. I looked at my fellow sirens, with the bodies of vultures and the heads of women, and they gave me a puzzled expression. Why weren't the men falling under our spell?