Pirates of the Caribbean: The Siren Song - Jack Sparrow Book #2 by Rob Kidd

Captain Jack Sparrows ship, the Barnacle, and its up-till-now unshakable crew have suddenly fallen under a sinister spell. While continuing on their quest for the storied Sword of Corts, the crew suddenly finds themselves entranced by an ethereal song and each of them attempts to take the Barnacle in a different directionand away from the swords supposed location. Only Jack seems unaffected by the strange song, but can he both subdue his crew and defeat the mysterious force behind the dark spell?