Musical Scale

This is a query application about guitar scales,which contents Ionian、Blues、Dorian、Aeolian、Melodic Minor and so on. From now on,you can practice the scale easily by IPHONE or IPAD anytime if you want. The application can switchover the Tone or Letter mode. You do not need to study other using ways,because it is so easy. This application can help you walk on a master road (Iphone5 is supported.)