Fig. 1 · F to G

interval

F major second

FlowerGupperM22 half steps

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

On the keyboard

Fig. 2

What is true of it

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

Turn it upside down — put the F 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 F

F → G♭minor second · dissonance F → A♭minor third · imperfect consonance F → Amajor third · imperfect consonance F → B♭perfect fourth · perfect consonance F → Baugmented fourth · dissonance F → C♭diminished fifth · dissonance F → Cperfect fifth · perfect consonance F → D♭minor sixth · imperfect consonance F → Dmajor sixth · imperfect consonance F → E♭minor seventh · dissonance F → Emajor seventh · dissonance

C M2 C♯ M2 D♭ M2 D M2 D♯ M2 E♭ M2 E M2 F♯ M2 all 204