The Patronus theme

The Patronus theme is a subtle choral piece Sung by an ethereal chorus. theme Associated with the "Expecto Patronum" spell, it is poignantly layered with the "Past theme during the climax of the film. it first appears in the Third soundtrack.

Full list of appearances
The Patronus theme can be heard on the tracks "The Patronus Light", "The Dementors Converge" and "Finale".

Appearances

 * Harry Potter and the Prisoner of Azkaban (film)
 * Harry Potter and the Prisoner of Azkaban (soundtrack)