Which mode corresponds to the major scale?

• A. Dorian
• B. Ionian mode
• C. Phrygian
• D. Locrian

Answer: (B)

The main idea here is that the major scale corresponds to the Ionian mode. Ionian is the scale you get when you start on the first degree of a major scale and use the same pitch collection, giving the familiar major sound. Its interval pattern is the major scale’s pattern: whole, whole, half, whole, whole, whole, half. So playing the major scale from the tonic is hearing Ionian.

The other modes are formed by starting on other degrees of the same scale and using the same notes, which changes the interval pattern and the tonal flavor. For example, if you take the same pitches as C major and start on D, you’d hear Dorian, not the major scale.