It is the live wallpaper which used the drum kit as the motif.
Each part can be sounded with touching.
Moreover, tempo can be measured by carrying out the tap of the screen according to a rhythm.
Tempo displays the speed in every time, and the average value for latest 32 beats.
A drum kit can be chosen from 4 colors.

*How to set the Live Wallpaper:
1.Press the MENU hard key button at the Home display.
2.Select "Wallpaper" at the menu.
3.Select "Live wallpapers" on popup menu.
4.Select "Rock 03 Live Wallpaper" from the list
5.Tap the "Set wallpaper" button at the display.