With this rhythm picture book, baby can play instruments along with variety of music. Age : From 8 months Remarks : For the baby aged 8 months to 3 years old, it is important period as his/her brain development is dynamic and remarkable. This application offers a fine, high-quality intellectual sound material which baby and parents can enjoy together. - Authentic sounds All music is recorded by real instruments and baby can learn each instrument with having fun using both pictures and sounds. Please enjoy best sound quality tuned specifically for iPhone, iPad and iPod touch. - Baby can play together with parents. Upper two instruments are set for parents and the other three lower are for baby. This arrange is suitable for parents holding baby on their hip. - Music and instruments will be added once or twice per month, not only standard numbers but also seasonal and trendy songs.