Music theory can be confusing for beginners, especially when it comes to interval construction. In this article, we’ll explore the basics of interval construction in music theory and how to identify intervals using a simple formula.

What are Intervals?

In music theory, an interval is defined as the distance between two notes. This distance is measured by counting the number of steps (or half-steps) between those two notes.

Types of Intervals:

1. Perfect Intervals: These intervals have a strong tonal quality and are considered stable.

2. Major and Minor Intervals: These intervals are more commonly used in music and have a distinctive sound.

3. Augmented and Diminished Intervals: These intervals are less commonly used but add a unique flavor to music.

Interval Construction Formula:

To construct an interval, you need to know the following:

1. The starting note

The type of interval
3. The number of steps required to reach the second note

The common formula for constructing an interval is:

Starting Note + Interval Type + Number of Steps = Second Note


1. Perfect 5th Interval:

To construct a perfect 5th interval from the note C, we would use the following formula:

C (Starting Note) + Perfect Interval Type + 7 Steps = G (Second Note)

2. Minor 3rd Interval:

To construct a minor 3rd interval from the note F, we would use the following formula:

F (Starting Note) + Minor Interval Type + 3 Steps = Ab (Second Note)


Interval construction is an essential concept in music theory, and understanding it will greatly improve your ability to read and compose music. By using the simple formula outlined above, you can easily identify and construct intervals in your own compositions.