It is spoken syllables. This poem was written based on an image. the image was some ice cubes and a small blaze of fire inside a glass and they created shadow in the background. I don't have the image unfortunately but it was meant to show the contrast of fire and ice and the glass is a symbol of this world. This shows the need for opposites to exist and the duality within anything in this world and that all things come from darkness .... the shadow that glass is creating.