Learning to play a piano is very advantageous to the music life of a person. While other musical instruments can also help, the beauty of the piano is, it does not get out of tune easily. In fact, it rarely does, which means it is almost always right in tune. A child that is quite out of tune can be corrected just by following the tune of the piano. For the logical, just following the notes from the music sheet will produce the right music. If you want your child to be a Mozart, buy her or him a casio cdp-120 perhaps and hire a piano teacher for proper training.