Chords & Harmony – Building Musical Depth - Free MCQ Practice Test

The diminished triad on the leading tone (vii°) is the correct choice because it contains a tritone between its root and fifth, creating maximum harmonic tension that strongly resolves to the tonic. This dissonance makes it ideal for building tension in emotional passages. The major mediant triad (III) actually provides consonant stability rather than tension. The subdominant minor triad is consonant and pre-dominant but lacks the sharp dissonance requested. The tonic major would actually weaken the minor key's character and provides resolution, not tension.

The natural extensions of G7 are calculated by continuing up the G major scale from the seventh (F). The ninth is A (whole step above G), the eleventh is C (fourth above G), and the thirteenth is E (sixth above G). These are the unaltered, natural extensions. Option B incorrectly uses flatted alterations, which would create a different harmonic color. Option C uses sharped alterations that don't occur in the natural G dominant scale context. Option D simply duplicates existing chord tones rather than adding new extensions above the seventh.

The deceptive cadence traditionally moves from V (G7) to vi (A minor) instead of the expected I (C major). This works because A minor shares two common tones with C major (C and E), allowing smooth voice leading while surprising the listener. The vi chord is the standard and strongest deceptive resolution. Moving to F (IV) creates a plagal cadence approach, not a deceptive one. Resolving to C major would be an authentic cadence, eliminating the deception entirely. E minor can work but is less conventional and effective than A minor for this purpose.

In a C major triad with added sixth (C-E-G-A), the A note is the sixth degree above the root C, which corresponds to the submediant (sixth scale degree) of C major. Added sixths function as stable color extensions that don't require resolution, commonly used in jazz and popular music for a sophisticated, mellow sound. The supertonic would be D, not A, so option B is incorrect. The leading tone in C major is B, not A, eliminating option C. The mediant is E, which is already the third of the chord, making option D factually wrong.

To tonicize E minor (the dominant in A minor), you need its own dominant seventh chord: B7 (V7 of E). This is called a secondary dominant, notated as V7/V (five-seven of five). It temporarily makes E minor feel like a tonic by approaching it with its own dominant-tonic relationship. D major is the subdominant of A minor and doesn't create dominant function toward E. F major is the submediant and moves away from tonicizing E minor. C major is the mediant/relative major and doesn't function as a dominant to E.

Spreading chord tones across multiple octaves with wider intervals creates the open, spacious voicing ideal for contemplative music. This technique, called open voicing, allows each note to breathe and creates a less dense texture. Close position (option A) clusters notes together, creating density rather than spaciousness. Omitting the seventh (option C) would change the chord from Cmaj7 to a simple C major triad, losing its essential character. While inversion (option D) changes color, it doesn't inherently create the open, spacious sound achieved by wide interval spacing across registers.

The tritone substitution replaces the dominant (V) with a dominant seventh chord built on the flatted second degree (bII7), which shares the same tritone as the original V7. In a minor key iv-V-i, replacing V with bII7 creates a smooth chromatic bass descent (iv to bII7 to i) while maintaining strong resolution through the shared tritone. This is a hallmark jazz technique. The leading tone diminished seventh (option A) is already closely related to V, not a colorful substitution. The major II chord (option B) changes the subdominant function rather than creating the requested jazz-influenced V substitution. Replacing the tonic (option D) eliminates the resolution entirely, contradicting the question's requirement.

F#-A-C-Eb is a fully diminished seventh chord (diminished triad plus diminished seventh). You can verify this: F# to A is a minor third, A to C is a minor third, C to Eb is a minor third—all stacked minor thirds create a fully diminished seventh. This chord functions as a dominant substitute or chromatic embellishment, typically resolving to G major or minor. A half-diminished seventh would have a minor seventh interval (F# to E natural), not the diminished seventh (F# to Eb) present here. A minor seventh would require a perfect fifth (F# to C#), which this chord lacks. A dominant seventh requires a major third and perfect fifth, neither of which appear in this symmetrical diminished structure.

The smoothest voice leading keeps common tones stationary (C and E are shared between both chords) and moves only the non-common tone (G) by the smallest interval possible—a whole step up to A. This creates C-E-A (first inversion of A minor). Option D correctly identifies this minimal-motion approach. Option A moves G down to A but results in root position, which works but involves more total motion than keeping the C and E in the same register. Option B involves leaping all voices unnecessarily, creating maximum rather than minimum motion. Option C omits the third (C), which weakens the chord's identity and doesn't represent smooth voice leading principles.

The I-vi-ii-V progression (in C major: C-Am-Dm-G) creates root movement by descending fifths or ascending fourths: C down to A (major sixth/descending by third), A down to D (fifth), D down to G (fifth), and G would return down to C (fifth). While not a perfect circle-of-fifths, it contains strong root motion by fourths/fifths that creates forward momentum and smooth bass movement—the reason it's prevalent in pop. Option B is incorrect because this progression stays within one key, not modulating between relative keys. No deceptive cadences occur here (option C); the progression ends on V, typically resolving to I authentically. Plagal motion (option D) specifically means IV-I; this progression includes ii and V, not emphasizing plagal motion.

In four-part chorale writing, the fifth of a V7 chord is most commonly omitted because it's the least harmonically essential tone. The root defines the chord's identity, the third establishes its quality (major), and the seventh creates the characteristic dissonance and resolution tendency. Omitting the fifth (often doubling the root instead) maintains all essential harmonic information and allows smooth voice leading. Omitting the root (option B) destroys the chord's foundation and creates ambiguity. Omitting the third (option C) removes what distinguishes major from minor and is harmonically destructive. Omitting the seventh (option D) converts the chord from a seventh chord back to a simple triad, eliminating its dominant seventh function entirely.

The Dorian mode's distinguishing feature compared to natural minor (Aeolian) is its raised sixth scale degree. A major IV chord (built on the fourth degree) contains this characteristic raised sixth as its major third, making it the signature Dorian sound. In D Dorian, this would be a G major chord containing the B natural (raised sixth) instead of Bb. The i chord (option A) doesn't distinguish Dorian from natural minor—both have minor tonics. The minor v chord (option C) actually belongs to natural minor; Dorian typically features major or dominant chords on V. The diminished ii chord (option D) doesn't exist in Dorian, which has a minor ii chord.

A split-third chord (also called major-minor chord or Hendrix chord) literally contains both a major third and minor third above the same root, creating simultaneous major and minor quality—the ultimate tonal ambiguity. For example, C-E-Eb-G contains both E (major third) and Eb (minor third). This is the direct answer. A suspended fourth chord (option A) omits the third entirely, creating neutrality rather than ambiguity between major and minor. A major-minor seventh (option B, dominant seventh) is a major triad with added minor seventh—it has one third, not both. An added ninth (option C) extends the harmony but doesn't include both third qualities simultaneously unless specifically voiced as a split-third voicing.

A C major triad with E in the bass is in first inversion, notated as C/E or I6 in Roman numerals. First inversion is moderately stable—less grounded than root position but considerably more stable than second inversion. It's freely used in progressions and doesn't require special treatment. Second inversion (option B) would have G (the fifth) in the bass, not E. Third inversion (option C) only applies to seventh chords, not triads, making this option invalid. Root position (option D) requires C in the bass, not E, so this contradicts the question's given information entirely.

V/V-V (the dominant of the dominant, followed by the dominant) creates the strongest dominant preparation by double-stacking dominant energy. This secondary dominant approach intensifies harmonic momentum: you first tonicize V (making it feel momentarily like tonic), then use that V to resolve to I in the chorus—maximum anticipation and energy. Option A's IV-V repetition provides dominant emphasis but lacks the intensification of the secondary dominant approach. Option C's I-vi loop is stable and circular, creating minimal tension rather than maximum energy. Option D's iii-vi-ii progression moves through subdominant function, actually avoiding the dominant preparation requested in the question entirely.