#7 Chord Progression: Music Theory 10 Levels -Love Me Tender

It seems like you've provided a detailed outline for understanding music theory as it relates to the song discussed in the previous context. This outline covers a range of topics from basic harmony to more advanced concepts such as tritone substitution and suspension chords. Each level builds upon the last, offering a comprehensive approach to learning about music theory.

Here's a summary of the 10 Levels of Music Theory Study based on the points you've listed:

1. Basic Harmony: Introduces primary chords (I, IV, V7) and their cadences (IV to I and V to I) in the key of C major.

2. Chord Extensions & Quartal Harmony: Incorporates 6ths, 7ths, and 9ths into chords (I6, IM7, I6/9, IV6, IVM7, IV6/9, FM9, G9) in the key of C major.

3. Minor Chord Substitutions & Additions: Explores ii, iii, and vi chords in the key of C major (Dm, Em, Am).

4. Circle of 5ths for Minor Chord Substitutions: Utilizes ii7, iii7, and vi7 chords in the key of C major (Dm7, Em7, Am7).

5. Secondary Dominants: Examines I7, II7, and VI7 chords in the key of C major (C7, D7, A7).

6. Altered Dominant Chord Substitution: Introduces 7b9 variations of secondary dominants (C7b9, D7b9, G7b9, A7b9) in the key of C major.

7. Diminished 7 Chords (b3 + b5) Substitutions and Insertions: Discusses I#°7, ii#°7, bIII°7, and IV#°7 (G7sus) in the key of C major.

8. Suspension Chords: Covers sus2 and sus4 variations such as G7sus, C7sus, A7sus, and D7sus.

9. Tritone Substitution Chords: Explores chord substitutions using the tritone (bII7, bIII7, bV7, bVI7, bVII7) like Db7, Eb7, Gb7, Ab7, and Bb7.

10. Advanced Chord Functions: Delves into more complex harmonic functions within a piece of music.

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