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Hello! Before we begin the lesson, please subscribe to this channel, as well as our groups on Facebook and Vkontakte https://vk.com/solfeggio_online / 766619894136562 The topic of our lesson is the inversion of the main triads of the mode. What is an inversion? An inversion is the movement of the lower sound of an interval or chord up an octave or the upper sound down an octave. That is, you can invert or move sounds not only in intervals, but also in chords. Let me remind you that a chord is a combination of three or more sounds arranged in thirds or which can be arranged in thirds. A triad is a chord consisting of three sounds arranged in thirds. Each sound of the triad has a name: lower - prima; middle - third; upper - fifth. When the order of sounds in a chord changes, this is called an inversion. A triad has two inversions: a sixth chord and a fourth-sixth chord. The first inversion of a triad is a sixth chord. A sixth chord is formed by moving the lower sound of the triad up a pure octave. It is designated by the number 6. The interval composition is: third + fourth (3+4). The second inversion of a triad is a fourth-sixth chord. A fourth-sixth chord is formed by moving the lower sound of the sixth chord up a pure octave or by moving the upper sound of the triad down a pure octave. It is designated by the numbers 64. The interval composition is: fourth + third (4+3) The main triads of the mode are built on the main degrees of the mode: on the first Tonic (T53) on the first, subdominant (S53) on the fourth, dominant (D53) on the fifth. And each of these triads has two inversions, which are located in the key on certain degrees of the mode. Below we will consider the scale degrees on which the main triads with inversions are built. I T53, S64 II D64 III T6 IV S53 V D53, T64 VI S6 VII D6