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AP Music Theory Practice Quiz: Interval Inversion and Compound Intervals

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

Test your understanding with short quizzes. This quiz has 9 questions to check your progress.

Question 1 of 9

According to the provided text, an interval whose size is smaller than or equal to an octave is called a:

All Questions (9)

According to the provided text, an interval whose size is smaller than or equal to an octave is called a:

A) Compound interval

B) Simple interval

C) Inverted interval

D) Perfect interval

Correct Answer: B

The content explicitly states, 'Intervals whose sizes are smaller than or equal to an octave may be called simple intervals.'

How is a compound interval created from a simple interval?

A) By inverting the simple interval

B) By adding an octave to the simple interval

C) By subtracting a perfect fifth from the simple interval

D) By transferring the lower note down an octave

Correct Answer: B

The text states, 'When an octave is added to a simple interval, the result is a corresponding larger interval called a compound interval.'

What is the described method for determining an interval's inversion?

A) Adding an octave to the upper note

B) Transferring the upper note down an octave

C) Reversing the notes without changing the octave

D) Transferring the lower note up an octave

Correct Answer: D

The content specifies that 'An interval’s inversion may be determined by transferring the lower note up an octave.'

What is the resulting sum when a simple interval is combined with its inversion?

A) A compound interval

B) A perfect octave

C) Another simple interval

D) Two octaves

Correct Answer: B

The text provides a key rule: 'An interval plus its inversion equals a perfect octave.'

In which of the following contexts can interval inversions and compound intervals be identified?

A) Only in notated music

B) Only in performed music

C) In both performed and notated music

D) Only in theoretical analysis

Correct Answer: C

The first point of the content states that these intervals can be identified in 'a. performed music b. notated music.'

A musician analyzes a piece of music and identifies an interval that is larger than an octave. Based on the provided definitions, this interval must be a:

A) Simple interval

B) Compound interval

C) Perfect inversion

D) Diminished interval

Correct Answer: B

Simple intervals are defined as being smaller than or equal to an octave. Therefore, an interval larger than an octave corresponds to the definition of a compound interval, which is a simple interval plus an octave.

The process of inverting a simple interval requires moving one of its notes by what specific interval size?

A) A perfect fifth

B) A simple interval

C) An octave

D) A compound interval

Correct Answer: C

The text defines the process of inversion as 'transferring the lower note up an octave.' This means the note is moved by the interval of an octave.

A student correctly inverts an interval. If they add the size of the original interval to the size of its inversion, what fixed total interval will they always get?

A) A unison

B) A perfect fifth

C) A perfect octave

D) A compound third

Correct Answer: C

This question tests the fundamental rule provided in the text: 'An interval plus its inversion equals a perfect octave.' This relationship is constant regardless of the starting interval.

Which statement best distinguishes a simple interval from a compound interval?

A) A simple interval is the inversion of a compound interval.

B) A compound interval is a simple interval with an added octave.

C) A simple interval is always perfect, while a compound interval is always major.

D) A compound interval is formed by transferring the lower note of a simple interval up an octave.

Correct Answer: B

The content defines a compound interval as the result of adding an octave to a simple interval. Option D describes inversion, not the creation of a compound interval.