The black keys get divided into groups of twos and threes.
There is no division of the white keys.
There are 12 keys, one for each tone of Western music.
The 76 other keys are pitches of the 12 tones.
What is a Key?
A key is a family of tones having fixed relation of one to another.
There are seven tones to a key.
The tone of a key from which all other tones resolve is the key tone.
Another name for the key tone is the tonic.
Key Names
In Lesson 1, you learned the tone names: C, C♯ or D♭ , D, D♯ or E♭, E, F, F♯ or G♭, G, G♯ or A♭, A, A♯ or B♭, B
There are 17 tone names for 12 tones as ten tone names name the same tones.
Major Keys and Minor Keys
There are 24 keys: 12 major keys and 12 minor keys.
Each major key and each minor key has a collection of chords that sound right when played in whatever successive order because tonal relationships exist among these chords.
The names of the keys use the same names as the 12 tones with the words major or minor said after the tone name.C, G, D, A, E, B, G♭, D♭, A♭, E♭, B♭, F
