Kids Music: Piano, Xylophone, Violin and Guitar is an Android game developed by Vina Kids that aims to teach children the basics of music through a fun and interactive way. The game is very easy to play and comes with HD graphics, full multi-touch support, and sample songs for replay.

With this app, children can play with 9 different samples and learn to play different rhythms as background music. The sounds are realistic and the game supports all screen resolutions, making it perfect for kids and toddlers who need a fun and educational game to play.

However, the game lacks in-depth tutorials and the sample songs are limited. Additionally, the app contains links to the developer's website, Facebook, Google+, Youtube, Twitter, and email, which may not be suitable for young children.

Overall, Kids Music: Piano, Xylophone, Violin and Guitar is a great app for children to learn the basics of music. With a few improvements, it could be an excellent tool for music education.