Fig. 1 · Eb to F

interval

E♭ major second

E♭lowerFupperM22 half steps

A whole step. The distance between most neighbouring notes of a major scale.

On the keyboard

FEb
Fig. 2

What is true of it

E♭ up a major second is F: 2 half steps, and 2 letters counting both ends.

Turn it upside down — put the E♭ on top — and it becomes a minor seventh. The two numbers always add to nine, and the two sizes to twelve.

It is a dissonance.

Every interval on E♭

E♭ → F♭minor second · dissonanceE♭ → G♭minor third · imperfect consonanceE♭ → Gmajor third · imperfect consonanceE♭ → A♭perfect fourth · perfect consonanceE♭ → Aaugmented fourth · dissonanceE♭ → B♭♭diminished fifth · dissonanceE♭ → B♭perfect fifth · perfect consonanceE♭ → C♭minor sixth · imperfect consonanceE♭ → Cmajor sixth · imperfect consonanceE♭ → D♭minor seventh · dissonanceE♭ → Dmajor seventh · dissonance

C M2C♯ M2D♭ M2D M2E M2F M2F♯ M2G♭ M2all 204