Politonus II: A different Ear Training app

Ear training is an essential skill for every musician. Being able to identify groups of notes as one sound-type is not only useful when listening but also when writing and composing music.

There are three fundamental structures that we must be able to identify if we want to become better musicians: Intervals, Triads & Seventh Chords. Politonus II concentrates in the development of your aural skills to identify these three note-groups.

Reverse Ear Training in Politonus II

There are plenty of ear training apps that allow you to train your ears but they are all based on playing a note-group and asking you to identify it (one at a time)

Politonus II uses a different approach called: Reverse Ear Training. In this method, a sound (note-group) is displayed and a set of different sounds (or note-groups) is played in sequence. You must then select the sound that matches the requested note-group.

Here’s an example of an exercise in Politonus II where the app is asking you to find a Major 3rd. Each sphere will then play the sound hidden in it. You then have to decide which sphere hides the Major 3rd and select it.


This method forces you to listen to the different note-groups while comparing them to the sound you hear as a major 3rd in your head. Not only do you have to find the major 3rd but you ar also classifying the other intervals played.

This optimizes the speed at which you learn to identify the different note-groups, because your brain is classifying multiple note-groups simultaneously on each exercise.

Machine Learning Algorithm

On top of using the reverse ear training method, Politonus II creates the next exercise based on your past responses using machine learning.  This allows Politonus II to optimize the sequence of exercises so you can advance at the fastest pace possible based on your previous aura skills improvement.

Once you solve the puzzle, Politonus II will up your level automatically.


Smart Progress View

Another cool feature in Politonus II is the Progress View. In this view, the app shows you  your current progress (achievement / familiarity) for each individual sound.

One look at the progress view and you’ll know how familiar you are with each interval, triad or seventh chord. Also, you will learn there aren’t that many anyway.


Each sphere contains an interval, triad or seventh chord. All possible note-groups are in this view. The spheres will move from the unfamiliar to the proficient level as you improve. Your final goal is to have all spheres shown inside the proficient layer. The lower the sphere is in the view, the better you know that interval, triad or seventh chord.

To learn more about Politonus II visit mDecks.com or click on the picture below:


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