$10.00 Emryonics Musical Cube teaches how sounds combine to create baby's own Mozart masterpieces. The Munchkin Mozart Magic Cube offers: Sounds from 5 instruments. Soft, rounded corners for baby's safety.  Fun and entertainment for babies of all ages. Music Education in a Cube Fun, creative, and inspiring, the  Cube teaches how sounds combine to create eight Mozart masterpieces. With a touch of a button, this interactive cube lets your child add or subtract from any combination of five different instruments, including harp, French horn, piano, flute, and violin.