This application makes your android devices to a Glockenspiel.
A glockenspiel is a percussion instrument composed of a set of tuned keys arranged in the fashion of the keyboard of a piano. In this way it is similar to the xylophone; however the xylophone's bars are made of wood while the glockenspiel's are metal plates or tubes thus making it a metallophone.
In German a carillon is also called a Glockenspiel while in French the glockenspiel is often called a carillon. In music scores the glockenspiel is sometimes designated by the Italian term campanelli.