This Piano Hack is about intervals or the distance between two notes. On the piano you can easily count this distance by counting the keys between two notes. The distance between C and the next E to the right, for example, is four half-steps. It is called a major third.
The same interval of a major third, or four half-steps, can be created from any starting point. So if you start at G, the major third is B, because it is four half-steps up from G.
Here is a list with all intervals of the C major scale:
from C to D – (major) second
from C to E – (major) third
from C to F – fourth
from C to G – fifth
from C to A – sixth
from C to B – (major) seventh
from C to C – octave
If you include the other intervals, that aren’t part of the major scale, you will get these additional ones:
The intervals within one octave
Intervals are so important because each one has its own distinct sound. If they are stacked upon each other, they form chords. Because there are so many intervals, there is a great number of chords, that can be created from them – all sounding different from each other.