

Rather than use a key signature that would in theory contain double sharps or flats, usually the key signature of the replacement major scale - A-flat, above is used, as shown below. > The Ab major scale sounds the same / contains the same note pitches, which are played in the same order (the scales are enharmonic), so it can be used as a direct replacement for the G-sharp major scale. > There is always an identical major scale that you can use in its place, which is on the Circle of 5ths. > It is not on the Circle of fifths diagram, which contains the most commonly used keys. > It is rarely used in practice, because it is too complex to use. > Its key signature would contain either double-sharps or double flats.

Warning: The G-sharp key is a theoretical major scale key. G-sharp major scale has 6 sharps, 1 double-sharp No. This step shows the G# major scale key signature on the treble clef and bass clef.
