The second time is when Snape is sent out of the castle, and the Order of the Phoenix takes over control. Critics have claimed that this has added strongly to the deep, moving feelings made and the sense of hope given to the audience. The first time is when Harry, Ron, and Hermione meet with their friends in the Room of Requirement. In the film, several tracks are re-used from previous Harry Potter films, which are not included in the released soundtrack: a variant of "Hedwig's Theme"', originally composed by John Williams, which plays during a scene in Harry Potter and the Chamber of Secrets, is used twice in Part 2. The main theme of the film, "Lily's Theme", was performed by Mai Fujisawa, daughter of Japanese composer Joe Hisaishi.
Actress Evanna Lynch confessed in 2011's Leakåon that she was invited to the scoring sessions, when Desplat was recording the music for the Gringotts sequence. Desplat started writing the music in early 2011 and finished recording with orchestrator Conrad Pope and the London Symphony Orchestra on at Abbey Road Studios, as stated on Pope's official Facebook page.
In an interview with Film Music Magazine, Desplat stated that scoring Part 2 is "a great challenge" and that he has "a lot of expectations to fulfil and a great deal of work" ahead of him. website that Part 1 composer Alexandre Desplat would return to score Part 2.