In this section I present you some musical transformations.
The principle of the transformation is that of calculating the degrees of the notes (in the modal sense of the term). For that, it will be necessary to identify the tonic of the chord and the original scale.
The sequence of degrees will be kept unchanged when applied to a different harmonic structure with different scales and chords.
If it is possible to identify the chords and scales of the original musical work, this transformation is totally reversible. Other transformations can be cascaded and it is always possible to return to the original music.
The principle of transformation is then based on the degree conservation. If we consider a starting music, we can always transform this music towards an extremely simple harmonic structure, based on a single chord and a single scale.
The analysis of degree variations can therefore disregard the harmonic aspect, which is very interesting in a context of musical analysis.
This approach has been used to create automatic music, based on a particular degree variation model.