Soundtrack: Film 3
Soundtrack of the Film
Composed and Conducted by John Williams
Track titles:
1. Lumos! (Hedwig’s Theme)
2. Aunt Marge,s Waltz
3. The Knight Bus
4. Apparition On The Train
5. Double Trouble
6. Buckbeak’s Flight
7. A Window To The Past
8. The Whomping Willow And The Snowball Fight
9. Secrets Of The Castle
10. The Portrait Gallery
11. Hagrid The Professor
12. Monster Books And Boggarts
13. Quidditch, Third Year
14. Lupin’s Transformation And Chasing Scabbers
15. The Patronus Light
16. The Werewolf Scene
17. Saving Buckbeak
18. Forward To Time Past
19. The Dementors Converge
20. Finale
21. Mischief Managed
Mini John Williams info by 
John Towner Williams one of the best known, awarded, and financially successful composers in US history. He was born in Long Island, New York on February 8, 1932. Williams found work with the Hollywood studios as a piano player, eventually accompanying such fare such as the TV series.
Composer filmography (only latest):
Indiana Jones 4 (2006) (in production)
Secret Life of Walter Mitty, The (2005) (announced)
War of the Worlds (2006) (announced)
Vengeance (2006) (pre-production)
Jurassic Park IV (2005) (pre-production) (themes)
Harry Potter and the Goblet of Fire (2005) (filming)
Star Wars: Episode III - Revenge of the Sith (2005) (post-production)
Terminal, The (2004)
Harry Potter and the Prisoner of Azkaban (2004)
Declaration of Independence (2003) (V)