In a key signature, sharps or flats are placed to the right of the clef. The pitches indicated apply in every measure and octave.

The order of sharps in key signatures is 'F?, C?, G?, D?, A?, E?, B?. Starting with no sharps or flats (C major), adding the first sharp (F) indicates G major, adding the next (C) indicates D major, and so on through the circle of fifths.

Some keys may be written as an enharmonically equivalent

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