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Minor Seventh Intervals

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Five Minute Mozart - Music Theory Education

Diminished 7th Chords

Common in classical, jazz, and film music for modulation, the diminished seventh chord is a dramatic and highly tense four-note chord built entirely from minor thirds. Used to build tension and dramatic effect in progressions, this lesson details how to construct the chord using scale degrees and intervals, with clear examples on staff notation and keyboard visualization.

Perfect for advanced students, this video explains the chord’s symmetrical structure and its role in creating suspense and resolution in music.

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Interactive Exercise

1: What notes construct an E fully diminished 7 chord?

Eb - G - Bb - Db

E - G# - B - D#

E - G - Bb - Db

E - G - B - D

2: What notes construct a B fully diminished 7 chord?

Bb - Db - F - Ab

B - D# - F# - A

B - D - F - Ab

B - D - F - A

3: What notes construct an A fully diminished 7 chord?

A - C - E - G

Ab - C - Eb - G

A - C - Eb - Gb

A - C - Eb - G

4: What is the order of intervals that separates each note of a fully diminished 7th chord?

minor third - Major third - minor third

minor third - minor third - Major third

Major third - Major third - Major third

minor third - minor third - minor third

5: A fully diminished 7th chord consists of which two components?

diminished triad and minor seventh

minor triad and minor seventh

Major triad and minor seventh

diminished triad and diminished seventh

Score

Musical Alphabet

The musical alphabet is the fundamental building block of music theory and the foundation for reading music, scales, and intervals.

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