![]() ![]() One whole tone equals two semitones, so you can call them Whole and Half. pitch distance between those keys is one semitone. If there is no black key between two white keys, for example E and F, the interval i.e. ![]() pitch distance between those keys is one whole tone, denoted as "w" in the picture below. If there is a black key between two white keys, for example C and D, the interval i.e. The piano keyboard has been deliberately designed so that it is easy to play diatonic things in the keys of C major and A minor. These are the notes of the C major scale, and a similar geometry of intervals exists in all keys, it just starts from a different note and the white/black key distribution isn't so simple when you start elsewhere. Let's look at diatonic notes starting from C. Thus the chord rooted on the 7th scale degree becomes a fully diminished seventh chord. Thus the chord rooted on the 5th scale degree becomes a dominant seventh chord.Ĥ It is conventional in a minor key to raise the 7th scale degree by a half step to create a leading tone. Thus the chord rooted on the 7th scale degree becomes diminished.ģ It is conventional in a minor key to raise the 7th scale degree by a half step to create a leading tone. Thus the chord rooted on the 5th scale degree becomes major.Ģ It is conventional in a minor key to raise the 7th scale degree by a half step to create a leading tone. ![]() 1 It is conventional in a minor key to raise the 7th scale degree by a half step to create a leading tone. ![]()
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