The Penyacah is a seven-key metallophone one octave higher than the jublag and supports the main melody played by the giying.
Note that each key is divided into two areas (green and blue as shown below).
By pressing the "Zoom in" button, you are brought to the zoom view. You can then shift the registers by pressing the arrows.
You can hide the labels at the configuration page.
Graphics were also optimized for iPhone and iPod touch with 4-inch screen.