I remember an interactive music machine a few years ago that was of bizarre complexity. (newscientist.com)
Disc 1: Theatrical Feature 4K Ultra HD Disc 2: Theatrical Feature Blu - ray ** The Family Behind The Greatest Showman ** The Songs ** The Spectacle ** Music Machine ** Sing - Along ** Galleries ** Audio Commentary by Michael Gracey ** Digital (foxmovies.com)
Release Date: 30 March 2010 Alvin and the Chipmunks: The Squeakquel releases as a Single - Disc DVD with the following extras: - Munk Music Machine - Music Mania Featurette Alvin and the Chipmunks: The Squeakquel releases in a Squeak - Along Double DVD edition as well. (parentpreviews.com)