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2.2.50 Key_engraver

Engrave a key signature.

Music types accepted:

key-change-event

Properties (read)

createKeyOnClefChange (boolean)
Print a key signature whenever the clef is changed.
explicitKeySignatureVisibility (vector)
break-visibility’ function for explicit key changes. ‘\override’ of the break-visibility property will set the visibility for normal (i.e., at the start of the line) key signatures.
extraNatural (boolean)
Whether to typeset an extra natural sign before accidentals changing from a non-natural to another non-natural.
keyAlterationOrder (list)
An alist that defines in what order alterations should be printed. The format is (step . alter), where step is a number from 0 to 6 and alter from -2 (sharp) to 2 (flat).
keySignature (list)
The current key signature. This is an alist containing (step . alter) or ((octave . step) . alter), where step is a number in the range 0 to 6 and alter a fraction, denoting alteration. For alterations, use symbols, e.g. keySignature = #`((6 . ,FLAT)).
lastKeySignature (list)
Last key signature before a key signature change.
printKeyCancellation (boolean)
Print restoration alterations before a key signature change.
Properties (write)
keySignature (list)
The current key signature. This is an alist containing (step . alter) or ((octave . step) . alter), where step is a number in the range 0 to 6 and alter a fraction, denoting alteration. For alterations, use symbols, e.g. keySignature = #`((6 . ,FLAT)).
lastKeySignature (list)
Last key signature before a key signature change.
tonic (pitch)
The tonic of the current scale.

This engraver creates the following layout object(s):

KeySignature.

Key_engraver is part of the following context(s): GregorianTranscriptionStaff, MensuralStaff, Staff and VaticanaStaff.

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