Listen to Harry Potter and the Prisoner of Azkaban: Lumos! (Hedwig's Theme) online. Harry Potter and the Prisoner of Azkaban: Lumos! (Hedwig's Theme) is an English language song and is sung by Soundtrack and Theme Orchestra. Harry Potter and the Prisoner of Azkaban: Lumos! (Hedwig's Theme), from the album The Music of John Williams, was released in the year 2010. The duration of the song is 1:27. Download English songs online from JioSaavn.