When you cast this spell, you place a powerful magic curse on the land... a curse that transforms all conversations into songs. All creatures in the area with an Intelligence score of 3 or higher and the capacity for language must succeed on a Will save; if they fail, they lose the ability to speak normally and instead have to sing out everything they say. Creatures who enter the area during the spell's effect must immediately make a Will save, but only one Will save is necessary (or allowed) for any given creature for the entire duration of the spell. Creatures leaving the area find the spell's effects lifted, but they immediately resume if they re-enter the area while the spell's still in effect (they don't get another Will save). Creatures that succeeded on the Will save the first time