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