This video shows how to identify the variations in music. Instead of it being played on a piano it is shown on a chart of the different phases. Brian Steves the youtube explains in the video what it is like when using motivic in music.
I must say learning about motivic is very interesting. The video shows the different transformations or variations that is a phrase in music.
Seventh chords are made up of the root, third, fifth, and seventh notes. It is a triad with an extra note at the top of it. There are different types of seventh chords such as major 7th, minor 7th, minor 7th, half, or fully diminished 7th. Today is all about half and fully diminished seventh chords.
Half diminished chords are composed of a root minor third , diminished fifth and a minor seventh,
Seventh fully diminished chords are composed of a minor 3rd, and a diminished 5th.
When playing seventh chords they resolve to the one chord or first scale degree. In music, there are other scale degrees that resolve to a certain number. the 4th chord resolves down to the third 4th or can even resolve to the 4th because the 4th in a scale is the predominant chord. The 2nd which is a supertonic can either go down to the tonic which is the 1 or can go to the 3rd which is the mediant. Chords can resolve normally following each principle of progression.
7th chords and 4th chords create a tri tone which is a tendency tone that creates dissonance.
The picture goes into dept of the fully diminished seventh chords,
Even though the video explains what a 7th chord this video explains what 7th chords are and how they are formed.
In class, we discussed half and fully-diminished chords. In major keys, composers might want to put half diminished in a 6th scale degree so they can make it a half or fully diminished.
In a minor key, they raise the leading tone to make it half-diminished but also raising the 6th scale degree can make a fully diminished.
Steven Jacks a youtube explains the half and fully diminished.
