Why are tritones called tritones? I know it's the sharp 4, and it divides the octave in half.. but where does the "tri" (or 3) part come in?
i guess it refers to 3 whole-tones? or 3 whole steps? it's a weird name but i am thankful that it has a name, because it is much easier than always saying 'augmented 4th' or 'diminished 5th' and never being sure which one to say because they are both equally likely and also all of them are both