X-Men: First Class (Original Motion Picture Soundtrack) is the soundtrack album to the 2011 film X-Men: First Class. The film, directed by Matthew Vaughn, is based on the X-Men characters appearing in Marvel Comics, and is the fourth mainline installment in the X-Men film series and the fifth installment overall. Henry Jackman, who had worked with Vaughn in Kick-Ass (2010) composed the score, becoming the fourth composer to score for the series. The score consisted of pop and rock infused music, which is reminiscent of John Barry's themes from the 1960s.