This Sounds of the Orchestra Music Blocks Cartridge adds nearly limitless new compositions to the award-winning Music Blocks learning toy by Neurosmith. The same colorful blocks and shapes make new sounds with the same basic equipment. With them, young children can exhibit their musical intelligence à la Beethoven. The square is a violin; the circle is a bassoon; the triangle a flute; the star a piano; and the octagon a trumpet. The rectangle is an ensemble. The add-on cartridge scores even more musical discovery for children (as young as two) with this sleek, sophisticated music box. --Lynne Sampson