Thanks, Dad is a musical theme composed by Hans Zimmer for Pirates of the Caribbean: On Stranger Tides. It appeared as a track on the film's complete soundtrack.
The track opens on an ominous note played by a wooden instrument, followed by statements of Lord Cutler Beckett's motif
from Dead Man's Chest
, and the ending theme from "Underwater March
The track is heard when Captain Teague saves his son, Jack Sparrow, from a British soldier, who was about the shoot him.