Questions: Chromatic Alterations and Borrowed Chords by Ear

Question 1

You are listening to a piece in C major and hear the progression C major → F minor → G major → C major. The F minor chord contains Ab, which is not in the C major scale. A fellow listener says 'The piece briefly modulated to F minor.' What is the better explanation?

• A. The listener is correct — any chord containing a non-diatonic pitch indicates a temporary modulation
• B. The Ab is an unaccented passing tone and should be ignored in harmonic analysis
• C. The F minor chord is a borrowed iv chord from C minor (modal mixture), creating a chromatic color shift while the home key remains C major throughout
• D. The progression is harmonically ambiguous and cannot be analyzed without additional context

Answer: (C)

Borrowed chords expand harmonic color *within* the home key — the tonal center never changes. Unlike modulation, which establishes a new key through cadential confirmation, the borrowed iv visits the parallel minor world briefly and returns. The home key C major persists: the subsequent G major → C major cadence confirms it. If this were a modulation to F minor, we would expect cadential activity establishing F minor as a tonal center — which is absent.

Question 2

When identifying a borrowed chord by ear in an otherwise tonal passage, what is the most reliable auditory signal?

• A. The chord has a darker or brighter overall quality than the surrounding diatonic chords
• B. A chromatic pitch appears and moves by semitone toward a target note, revealing the borrowed chord's function through its characteristic resolution tendency
• C. The bass note moves unexpectedly, disrupting the established root-motion pattern
• D. The chord duration is shorter than surrounding chords, signaling its transient chromatic character

Answer: (B)

The semitone motion of the chromatic pitch is the borrowed chord's fingerprint. The borrowed iv in major contains a lowered sixth scale degree (e.g., Ab in C major) that characteristically resolves down by semitone to scale degree 5 (G), pulling toward the dominant. Finding that semitone motion, naming the chromatic pitch's scale degree, and understanding where it wants to go reveals the borrowed chord's function more reliably than impressionistic color judgments.

Question 3

Hearing a borrowed chord in a passage of C major means the music has temporarily left C major and entered a different key.

• T. True
• F. False

Answer: False

Borrowed chords are defined by the fact that they do NOT involve leaving the home key. They import a chromatic pitch from the parallel key (C minor in the case of C major) as a color effect, but the tonal center remains C major throughout. This is what distinguishes borrowing (modal mixture) from modulation: modulation establishes a new tonal center through cadential confirmation; borrowing maintains the original center while enriching its harmonic palette.

Question 4

The semitone motion of a chromatic pitch within a progression is a reliable fingerprint for locating and identifying borrowed chords by ear.

• T. True
• F. False

Answer: True

When you hear a voice move by semitone to a pitch outside the diatonic scale, that is almost always a chromatic alteration signaling a borrowed element. The direction of resolution — which note the chromatic pitch is pulling toward — reveals the borrowed chord's function. Tracking semitone voice motion is the practical skill that underlies all chromatic ear training.

Question 5

What distinguishes a borrowed chord from a modulation, and how does that distinction change what you listen for?

Model answer: A borrowed chord temporarily introduces a chromatic pitch from the parallel key while the home tonal center is maintained — no new key is established or confirmed. Modulation establishes a new tonal center through cadential confirmation (typically V–I in the new key), and subsequent progressions are heard relative to that new key. Listening for the distinction: in borrowing, the chromatic pitch resolves within the original key's harmonic logic and the home key's cadential patterns persist; in modulation, the new key's cadential activity replaces them. The presence or absence of cadential confirmation in the new key is the deciding factor.

The distinction matters practically because it determines the analytical frame for everything that follows. Misidentifying borrowing as modulation derails the entire harmonic reading of a passage.