Stable / Unstable – Beginner level

Meludia Stable / Instable

The exercises stable/unstable are related to the first step of harmonic interval recognition. It’s the red line of the discovery module that includes 8 stable/unstable branches with a growing difficulty. In this first branch, you will learn how to recognize the most stable interval (the octave) ; the very unstable interval (the major seventh).

Train here:



Structure of the branch

In the first exercise, the intervals are doubled, which means that one plays both intervals at the same time on different octaves. Doubling the intervals increases the sensation of stability and instability. In the 5th exercise, the intervals are not doubled.


This exercise is full of paradox. It can be very simple or very difficult depending on the person. Some early musicians can feel difficulties because they don’t know where to fix their attention.
Stable/unstable are concepts related to the harmony dimension. One does not need to focus its attention on spatialisation (is it high-pitched or low-pitched?), the dynamics or the timbre. One needs to recognize the emotional impact of each interval. We advise you not to think too much but to leave space to your intuition.

Why is it important

One harmonic interval is a sonic object made of two notes played at the same time. There are 12 inttervals in music and recognizing them will help you move to the next level. Knowing the 12 intervals is like learning the alphabet letters or the syllables and their sounds.

Dimensions and skills stimulated

Meludia - Dimensions et capacités.


In the traditional learning methods, stability refers to consonance and instability to dissonance. Meludia does not use the word of dissonance because it can sound negative.

Some composers from the beginning of the XXth century have invented a composition style only made of unstable intervals. These are Schoenberg, Berg, Webern. On the contrary, during the middle age period, intervals like triton were forbidden beause of their instability.

In this piece from Webern, you will only hear instable intervals. We call that dodecaphonic music.



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