With the release of Jurassic Park 3D, the film's soundtrack was re-released and contained additional tracks. The film’s soundtrack, along with that of The Lost World, was re-released again and remastered with expanded tracks on November 29, 2016. Jurassic Park's music is centered around two main themes. Both the above themes appear in all three films but it is the "Main Theme" and its two versions which are most frequently heard since "Journey to the Island" is mainly heard in the credits.