AP Music Theory Practice Quiz: Causation in Music Fundamentals

Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026

Test your understanding with short quizzes. This quiz has 10 questions to check your progress.

Question 1 of 10

A time signature of 3/4 directly causes the music to be organized into which temporal structure?

A)Three half notes per measureB)Four quarter notes per measureC)Three quarter notes per measureD)Two dotted-quarter notes per measure

All Questions (10)

A time signature of 3/4 directly causes the music to be organized into which temporal structure?

A) Three half notes per measure

B) Four quarter notes per measure

C) Three quarter notes per measure

D) Two dotted-quarter notes per measure

Correct Answer: C

Based on rhythm and meter fundamentals (RHY-1), the time signature establishes the temporal structure. In 3/4, the top number '3' indicates three beats per measure, and the bottom number '4' indicates the quarter note gets the beat, resulting in three quarter notes per measure.

The presence of four flats (B♭, E♭, A♭, D♭) in a key signature results in which major scale?

A) F major

B) B-flat major

C) E-flat major

D) A-flat major

Correct Answer: D

According to pitch fundamentals (PIT-1), key signatures provide the basis for scales. A key signature containing four flats causes the tonic of the corresponding major scale to be A-flat.

A triad is constructed with the intervals of a major third and a perfect fifth above the root. This specific interval structure causes the chord to have what quality?

A) Major

B) Minor

C) Diminished

D) Augmented

Correct Answer: A

Per pitch fundamentals (PIT-1), intervals determine chord qualities. The specific combination of a major third and a perfect fifth above the root is the defining cause of a major triad, a core concept in harmony (PIT-2).

In a 4/4 time signature, consistently dividing the quarter-note beat into two eighth notes results in a simple meter feel. What change in beat division would cause a compound meter feel?

A) Dividing the beat into four sixteenth notes

B) Dividing the beat into three eighth notes

C) Using a half note to represent the beat

D) Playing only quarter notes

Correct Answer: B

Rhythm and meter fundamentals (RHY-1) state that beat divisions establish the temporal structure. Simple meter is caused by a primary beat division into two parts, while a compound meter feel is caused by dividing the primary beat into three parts.

In the key of C major, a triad built on the fifth scale degree (G) functions as the dominant. This harmonic function and scale degree position cause it to be identified by which Roman numeral?

A) I

B) IV

C) V

D) vi

Correct Answer: C

Based on harmony fundamentals (PIT-2), Roman numerals identify chords based on their scale degree within a key. The chord built on the fifth scale degree, regardless of key, is always labeled with the Roman numeral V.

In the key of A minor, the naturally occurring dominant triad is E-G-B (a minor v chord). Raising the G to a G# causes what change in the chord's quality and Roman numeral identification?

A) It becomes a major chord (V)

B) It becomes a diminished chord (vii°)

C) It becomes an augmented chord (V+)

D) It remains a minor chord (v)

Correct Answer: A

This question requires applying pitch fundamentals (PIT-1) to solve a harmonic problem (PIT-2). Raising the third of the minor v chord (G to G#) changes the interval from a minor third to a major third, thus causing the chord's quality to change from minor to major. This is represented by changing the Roman numeral from lowercase 'v' to uppercase 'V'.

In a measure of 4/4 time, a composer has written a half note followed by a quarter note. According to the temporal structure established by the time signature, what rhythmic value is required to complete the measure?

A) A half note

B) A quarter note

C) An eighth note

D) A whole note

Correct Answer: B

Rhythm and meter fundamentals (RHY-1) establish that a 4/4 time signature requires the equivalent of four quarter notes per measure. A half note (2 beats) plus a quarter note (1 beat) equals 3 beats. Therefore, the temporal structure causes one more quarter note (1 beat) to be needed to solve the problem of completing the measure.

A C major triad is written with the note E in the bass. This placement of the chord's third in the lowest voice causes it to be identified with which Arabic numeral (figure) in addition to its Roman numeral?

A) No figure is needed

B) 6

C) 6/4

D) 7

Correct Answer: B

According to harmony fundamentals (PIT-2), Arabic numerals are used to identify chord inversions. When the third of a triad is in the bass (first inversion), this causes the chord to be labeled with the figure '6', representing the interval of a sixth between the new bass note and the chord's root.

In the key of G major, a chord is built on the second scale degree (A) and contains the notes A, C, E, and G. The presence of the note G, a seventh above the root, causes the chord to be a seventh chord. How is this specific chord identified using Roman and Arabic numerals?

A) I⁶/₄

B) V⁷

C) ii⁷

D) IV⁶

Correct Answer: C

This problem requires applying multiple fundamentals. The key of G major (PIT-1) causes A to be the second scale degree. A chord built on the second degree is a 'ii' chord (PIT-2). The presence of the seventh (G) makes it a seventh chord. In a major key, the diatonic chord built on the second degree is a minor triad, resulting in a minor-minor seventh chord, which is labeled ii⁷.

The structure of a natural minor scale, compared to its parallel major scale, is caused by the lowering of scale degrees 3, 6, and 7. How does the lowering of scale degree 3 affect the quality of the interval between the tonic and the mediant?

A) It changes from a perfect third to a major third

B) It changes from a major third to a minor third

C) It changes from a minor third to a diminished third

D) It has no effect on the interval quality

Correct Answer: B

Pitch fundamentals (PIT-1) govern scales and intervals. In a major scale, the interval from the tonic (scale degree 1) to the mediant (scale degree 3) is a major third. Lowering scale degree 3 by a half step, a defining characteristic of the natural minor scale, causes that interval to become a minor third.