The Holographic Principle is the seventh studio album by the Dutch symphonic metal band Epica, released on 30 September 2016. The album was produced by Joost van den Broek and mixed by Jacob Hansen. The band has explained that the idea behind the album is the universe is a digitally generated hologram. The Japanese Limited Edition features two additional discs: The Acoustic Principle, which consists of 5 acoustic versions of songs from the main album with different names, and The Instrumental Principle, which features the instrumental versions of all tracks in the album.