Mechanical Celesta - uGearsUgears Mechanical Celesta. Play music on the keys or create programmed melodies! Assemble me. Let the celestial music play! Do Re Mi Fa So La Ti Do. As Julie Andrews said in the Sound of Music, "once you have these notes in your heads you can sing a million different tunes by mixing them up." Ugears is proud to introduce the second DIY musical instrument in our collectionthe Mechanical Celesta. Like the Ugears Hurdy Gurdy, the Mechanical Celesta is