This app is recommended for person who composes music wants to learn chord progression can not play any music instrument and so on.

Just by touching your screen twice you can play a variety of chords.

You can play music anywhere. For example in your room in your car at a cafe at your school and even at a toilet room in your office.

How to use
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Key selection
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Select a key according to music that you want to play. Then the layout of root note buttons is changed. If D is selected the bottom-left is 'D (I)' and the top-right is 'C# (VII)'. If you are not specialist of music you can start with the key C.

Play chords
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You can play a variety of chords by very very very easy way! For example if you want to sound the 'Em7' in the key 'C' touch the root note button 'E' (third column of bottom) and touch the chord button 'm7'. Then this app plays the chord of 'Em7' (p1 m3 p5 M7). Amazingly easy isn't it?

Change the layout of chord buttons
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If you want to play the chord '13' button you may try to find it but you can't find it. In this case you can re-assign a chord to any chord button. By long-touching a chord button a dialog interface with the list of chord pops up. You can select a chord that you want to assigned to the button.

After changing the layout you will want to save the changes. You can save it from the "Save chord layout" button from the option menu. And you can also load it from the "Load chord layout" button anytime.

Landscape mode
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The default screen orientation setting is portrait mode. You can change the orientation to landscape mode from the option menu. It makes easier to use both left and right hands and you can play more dramatic chord progression.