Key signature sometimes called "standard key signatures". Other scales are written either with a standard key signature and use accidental as required, or with a nonstandard key signature. Examples of the latter include the E (right hand), and F and G (left hand) used for the E diminished (E octatonic) scale in Bartók's "Crossed Hands" (no. 99, vol. 4, "Mikrokosmos"), or the B, E and F used for the D Phrygian dominant scale in Frederic Rzewski's "God to a Hungry Child". The absence of a key signature does not always mean that the music is in the key of C major /
Numbered musical notation 3 4 5 6 7" to raise or lower the pitch and placed after the note names "C D E F G A B", which are used for key signature and chord markings in the numbered system. But these accidentals are relative to the diatonic scale (1 2 3...) rather than the note names (C D E...). For example, even though the leading note for the harmonic C minor scale is "B natural", it is written as "5". Key signature changes are marked above the line of music. They may be accompanied by symbols that represent the note's degrees at