"Planet Piano" is a piano App whose keyboards are the planets of the solar system.
Please enjoy the mysterious sound on the stage of the space.
Tap Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, the sound of each planet sounds like the pipe organ.
In addition, two simple songs are automatically performed when the lower-left corner of the screen or the top left corner is tapped.

Order of the size of the planet on the screen corresponds to the order of the size of the planet of the real solar system.
Throughout this App, interests in the space are deepened.
This app is recommended not only for adults, but also for children.