On the planet Harmony, Tyree and his people are fighting to survive. Their beautiful world holds terrible dangers -- vicious sea creatures, diminishing food supplies, and, at the heart of it all, a rising tide that will soon destroy the city where they cling to their way of life.

Tyree has secretly befriended Amadeus, the greatest songmaster of the native alien race. Amadeus teaches Tyree about the power of music, and, to Tyree's blind sister, he gives an awesome treasure. But his gift kindles the fears of Tyree's people -- fears more dangerous than the sea itself. Tyree must help his people before they tear their community apart.

In this richly inventive science-fiction novel, acclaimed children's author Laurence Yep creates a future world that is as haunting and as powerful as the song that Tyree learns to play -- Sweetwater.