Music Theory by Trevor H Keller

 Trevor Keller Music that originated in Western Countries such as Greece, Rome, Austria, Germany, France, Italy, England, Canada and the United States. It can be characterized by its use of an Equal Temperament Tuning System in which an octave is divided into 12 equally spaced notes and then those notes are altered slightly so that any music piece can be transposed into any of the 30 Keys, each Key having a characteristic quality, emotion or feel.

Enharmonic

Musical pitches that sound identical but are written or spelled differently. Example: The F# Major Scale sounds identical to the Gb Major Scale, but has different note names or the scale is spelled differently. That is: F# Major Scale: F#, G#, A#, B, C#, D#, E#, F#. Verses: Gb Major Scale: Gb, Ab, Bb, Cb, Db, Eb, F, Gb. If you play both scales on the piano, you will be hitting the same keys, and the scales will sound identical.

Key Signature

This is an arrangement of sharps or flats, written after the cleft and before the Time Signature, that identifies which of the 30 keys a particular piece of music is written in. Sometimes these keys are used to match the range of the singer and sometimes musicians prefer a certain key because each musical pitch has a different feeling. Therefore, each of the 30 keys has a different feel or emotion.

The 30 Keys of Western Music

There are 30 Keys that the majority of Western Music is written in. The 14 Major Keys are: C Major, G Major, D Major, A Major, E Major, B Major, F# Major, Gb Major, C# Major, Db Major, Ab Major, Eb Major, Bb Major, and F Major. (D# Major, G# Major and A# Major are not typically used but their enharmonic equivalents are used instead: Eb Major, Ab Major and Bb Major) The 16 minor keys are: A minor, E minor, B minor, F# minor, Gb minor, C# minor, Db minor, G# minor, D# minor, Eb minor, Bb minor, A# minor, F minor, C minor, G minor and D minor. (Ab minor is not typically used but its enharmonic equivalent G# is used instead)


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