interval
C minor sixth
ClowerA♭upperm68 half steps
Eight half steps. The major third turned upside down.
On the keyboard
What is true of it
C up a minor sixth is A♭: 8 half steps, and 6 letters counting both ends.
Turn it upside down — put the C on top — and it becomes a major third. The two numbers always add to nine, and the two sizes to twelve.
It is a imperfect consonance.
Every interval on C
C → D♭minor second · dissonanceC → Dmajor second · dissonanceC → E♭minor third · imperfect consonanceC → Emajor third · imperfect consonanceC → Fperfect fourth · perfect consonanceC → F♯augmented fourth · dissonanceC → G♭diminished fifth · dissonanceC → Gperfect fifth · perfect consonanceC → Amajor sixth · imperfect consonanceC → B♭minor seventh · dissonanceC → Bmajor seventh · dissonance