Jack and the Cuckoo-Clock Heart is an animated feature film based on the concept album by the French rock band Dionysos, and on the illustrated novel La Mécanique du cœur written by the band's lead singer Mathias Malzieu. The music of the film was entirely composed by Dionysos. The original French language version, Jack et la mécanique du cœur, which translates literally as Jack and the Mechanics of the Heart, was released in October 2013, with English-, German-, Finnish- and Spanish-language versions following in 2014.