Harry Potter and the Half-Blood Prince is the soundtrack to the 2009 film of the same name, written and composed by Nicholas Hooper. The score was conducted by Hooper alongside Alastair King. It is the second Harry Potter film to be scored by Hooper, who also composed the score for the previous film in the series, Harry Potter and the Order of the Phoenix. The soundtrack was released on 14 July 2009, a day before the film's release, and was nominated for a Grammy Award for Best Score Soundtrack Album for a Motion Picture. The soundtrack is critically acclaimed and the most successful album of the series.