Triads

Lesson 7

October 27th, 2020

Lesson 7

Lecture notes:
  • A triad is a set of three notes stacked in threes consisting of the Tonic (1), Mediant (3), and Dominant (5)
  • There are four main qualities in triads: Major, minor, Augmented (+), and diminished (o).
  • When numbering chords in music, you would use Roman numerals with upper case numbers being Major and lower case numbers being minor or diminished. For example (I) = Major, (i) = minor/diminished.
  • The Roman numerals used in music are: 1 = I or i, 2 = II or ii, 3 = III or iii, 4 = IV or iv, 5 = V or v 6 = VI or vi, and 7 = VII or vii
  • In diatonic major scales, chord (I) Major, chord (ii) minor, chord (iii) minor, chord (IV) Major, chord (V) Major, chord (vi) minor, and chord (vii) diminished.
  • In a harmonic minor scale, chord (i) minor, chord (ii) diminished, chord (III) Major, chord (iv) minor, chord (V) Major, chord (VI) Major, chord (vii) diminished.
  • The leading tone is found in chords (V) and (VII) and always wants to resolve to the tonic.
  • Chord (II) and (IV) serve predominant functions that want to move or transition to chord (V), which is the dominant chord.

The image above shows the four main qualities of triads in C Major's key using the root chord.


The photo above shows a diatonic set of triad chords in C and D major.


The video above explains what a triad is and how to construct them.


The video above explains how triads are constructed and briefly describes inversions.


The above image consists of Diatonic triads in Bb Major and C Major's keys and their relative minors, G minor and A minor.


The above video shows me playing the diatonic triad scales in Bb Major and C Major with the relevant minors.

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