"Fog Bound" is a musical theme credited to Klaus Badelt for Pirates of the Caribbean: The Curse of the Black Pearl. It appears as track one on the film's soundtrack, at 2:16 in length.
The track begins with a light jig before descending into a plodding, suspensful theme (00:28) that incorporates woodwinds later used to denote the Black Pearl and its cursed crew. The theme reaches a suspensful climax (approx 01:30) before leading into the film's love theme that continues until the end of the track, seguing directly in to "The Medallion Calls".
The track accompanies Elizabeth Swann's dream concerning the crossing to Port Royal, and her "present-day" introductory scene.