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Music properties

absolute-octave (integer)
The absolute octave for a octave check note.
alteration (number)
alteration for figured bass
articulation-type (string)
key for script definitions alist.

TODO: consider making type into symbol

articulations (list of music)
Articulation events specifically for this note.
associated-context (string)
Name of the Voice context associated with this \newaddlyrics section
bass (boolean)
Set if this note is a bass note in a chord
bracket-start (boolean)
start a bracket here. TODO: use span requests?
bracket-stop (boolean)
stop a bracket here.
cautionary (boolean)
If set, this alteration needs cautionary accidental
change-to-id (string)
name of the context to change to
change-to-type (symbol)
type of the context to change to.
compress-procedure (procedure)
compress this music expression. Argument 1: the music, arg 2: factor
context-id (string)
name of context
context-type (symbol)
type of context
denominator (integer)
denominator in a time signature
descend-only (boolean)
If set, this \context will only descend in the context tree.
digit (integer)
digit for fingering
direction (direction)
Print this up or down?
drum-type (symbol)
Which percussion instrument to play this note on.
duration (duration)
Duration of this note/lyric.
element (music)
The single child of a Music_wrapper music object, or the body of a repeat.
elements (list of music)
A list of elements for sequential of simultaneous music, or the alternatives of repeated music.
figure (string)
a `figure' (which may be a string) for figured bass
force-accidental (boolean)
If set, a cautionary accidental should always be printed on this note
grob-property (symbol)
The symbol of the grob property to set.
grob-value (any type)
The value of the grob property to set
internal-class-name (string)
C++ class to use for this Music object
inversion (boolean)
If set, this chord note is inverted.
iterator-ctor (procedure)
Function to construct music-event-iterator object for this Music
label (markup)
label of a mark.
last-pitch (pitch)
The last pitch after relativization.
length (procedure)
How to compute the duration of this music
metronome-count (number)
How many beats in a minute?
name (symbol)
Name of this music object
numerator (integer)
numerator of a time signature
octavation (integer)
This pitch was octavated by how many octaves? For chord inversions, this is negative.
once (boolean)
Apply this operation only during one time step?
origin (input location)
where was this piece of music defined?
part-combine-status (symbol)
Change to what kind of state? Options are solo1, solo2 and unisono
penalty (number)
Penalty for break hint.
pitch (pitch)
the pitch of this note
pitch-alist (list)
list of pitches jointly forming the scale of a key signature
pop-first (boolean)
Do a revert before we try to do a override on some grob property.
predicate (procedure)
the predicate of a \outputproperty.
procedure (procedure)
The function to run with \applycontext. It must take a single argument, being the context.
property-operations (list)
Do these operations for instantiating the context.
quoted-events (hash table)
A vector of with moment/event-list entries.
repeat-count (integer)
do a epeat how ofen?
span-direction (direction)
Does this start or stop a spanner?
span-type (string)
What kind of spanner should be created?

TODO: consider making type into symbol

split-list (list)
splitting moments for part combiner.
start-moment-function (procedure)
Function to compute the negative length of starting grace notes.
string-number (integer)
The number of the string in a String_number_req
symbol (symbol)
Grob name to perform an override/revert on.
tags (list)
List of symbols that for denoting extra details, e.g. \tag #'part ... could tag a piece of music as only being active in a part.
tempo-unit (duration)
The unit for the metronome count.
text (markup)
markup expression to be printed
text-type (symbol)
Particular type of text script (e.g. finger, dynamic).
tonic (pitch)
Base of the scale
tremolo-type (integer)
type (symbol)
The type of this music object. Determines iteration in some cases.
types (list)
The types of this music object; determines by what engraver this music expression is processed.
value (any type)
Assignment value for a translation property
what (symbol)
What to change for auto-change. FIXME, naming

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