A free program for Android, by GMobiler Apps.

The Accordion Chromatic Button is an application that allows you to play the accordion with great ease.

The main screen is where you will be able to see the different options. On the left, you can choose the type of accordion (single, double, or triple), while on the right you can select the speed of the melody (slow, normal, or fast).

The next thing you need to do is to select the range of the melody. The options are from C0 to C8.

After that, you need to set the number of notes. There are 12 notes in the accordion.

When you are done, press the Start button, and the accordion will start playing.

You can change the volume of the melody and of the background music.

The next thing is to change the style of the melody. There are 3 styles.

After that, you need to change the duration of the notes. There are 2 durations.

You need to press the stop button when you are done.

The next thing is to change the volume of the background music.