When it comes to "building" musical creativity, nothing tops Neurosmith's Music Blocks! The premise is simply brilliant: as toddlers rearrange the electronic blocks, they're composing beautiful, original songs. Each block side plays a unique measure of music, yielding more than one million possible tunes. This irresistible music toy sparks endless exploration, while teaching colors, shapes, sequence, and cause and effect. Music Blocks includes jazz, African rhythms, and Mozart selections; there are no additional cartridges to purchase. Musical toys make great holiday gifts that offer developmental benefits. Delivers great digital sound quality. Music Blocks console measures 12 1/2"L x 7 1/2"W x 4"H; each music block is a 1 1/2" cube. Requires 4 "AA" batteries, included. For ages 2 and up.