Introduction

An interval is the distance between two pitches. They can be melodic (played one after another) or harmonic (played simultaneously). All intervals are identified by number size and quality.

1

Interval number

An interval is named by its number size--the number of scale steps it encompasses, including the first note as "1." Thus, C up to E would be a third; G up to F would be a seventh; and E up to A would be a fourth.

What are the number sizes of the following intervals?

What is a 5th above D?

What is a 7th below C?