Figured bass

Not to be confused with Chord notation systems: Roman Numeral Analysis

Adding a new figured bass indication

1. Select the note to which the figured bass applies;
2. Press the Figured Bass shortcut. The default isCtrl+G (Mac: Cmd+G): this can be changed in Prefences: Shortcuts if desired;
3. Enter the text in the editor 'blue box' as required (see below);
4. Use one of the following options as required:
   • Press Space to move to the next note ready for another figured bass indication (or click outside the editor box to exit it). The editor advances to the next note, or to the rest of the staff to which figured bass is being added. (To move to a point in between, or to extend a figured bass group for a longer duration, see Duration (below)).
     
   • Shift+Space moves the editing box to the previous staff note or rest.
   • Tab advances the editing box to the beginning of the next measure.
   • Shift+Tab moves the editing box to the beginning of the previous measure.

Text format

Digits

Digits are entered directly. Groups of several digits stacked one above the other are also entered directly in a single text, stacking them with Enter:

Accidentals

Accidentals can be entered using regular keys:

To enter:	type:
double flat	bb
flat	b
natural	h
sharp	#
double sharp	##

These characters will automatically turn into the proper signs when you leave the editor. Accidentals can be entered before, or after a digit (and of course, in place of a digit, for altered thirds), according to the required style; both styles are properly aligned, with the accidental 'hanging' at the left, or the right.

Combined shapes

Slashed digits or digits with a cross can be entered by adding \, / or + after the digit (combining suffixes); the proper combined shape will be substituted when leaving the editor:

The built-in font can manage combination equivalence, favoring the more common substitution:

1+, 2+, 3+, 4+ result in (or )

and 5\, 6\, 7\, 8\, 9\ result in (or )

Please remember that / can only by combined with 5; any other 'slashed' figure is rendered with a question mark.

+ can also be used before a digit; in this case it is not combined, but it is properly aligned ('+' hanging at the left side).

Parentheses

Open and closed parentheses, both round: '(', ')' and square: '[', ']', can be inserted before and after accidentals, before and after a digit, before and after a continuation line; added parentheses will not disturb the proper alignment of the main character.

Notes: (1) The editor does not check that parentheses, open and closed, round or square, are properly balanced. (2) Several parentheses in a row are non-syntactical and prevent proper recognition of the entered text. (3) A parenthesis between a digit and a combining suffix ('+', '\', '/') is accepted, but prevents shape combination.

Continuation lines

Continuation lines are input by adding an '_' (underscore) at the end of the line. Each digit of a group can have its own continuation line:

Continuation lines are drawn for the whole duration of the figured bass group.

'Extended' continuation lines

Occasionally, a continuation line has to connect with the continuation line of a following group, when a chord degree has to be kept across two groups. Examples (both from J. Boismortier, Pièces de viole, op. 31, Paris 1730):

In the first case, each group has its own continuation line; in the second, the continuation line of the first group is carried 'into' the second.

This can be obtained by entering several (two or more) underscores "__" at the end of the text line of the first group.

Duration

Each figured bass group has a duration, which is indicated by a light gray line above it (of course, this line is for information only and it is not printed or exported to PDF).

Initially, a group has the same duration of the note to which it is attached. A different duration may be required to fit several groups under a single note or to extend a group to span several notes.

To achieve this, each key combination in the table below can be used to (1) advance the editing box by the indicated duration, and (2) set the duration of the previous group up to the new editing box position.

Pressing several of them in sequence without entering any figured bass text repeatedly extends the previous group.

Type:	to get:
Ctrl+1	1/64
Ctrl+2	1/32
Ctrl+3	1/16
Ctrl+4	1/8 (quaver)
Ctrl+5	1/4 (crochet)
Ctrl+6	half note (minim)
Ctrl+7	whole note (semibreve)
Ctrl+8	2 whole notes (breve)

(The digits are the same as are used to set the note durations)

Setting the exact figured bass group duration is only mandatory in two cases:

1. When several groups are fit under a single staff note (there is no other way).
2. When continuation lines are used, as line length depends on the group duration.

However, it is a good practice to always set the duration to the intended value for the purposes of plugins and MusicXML.

Editing existing figured basses

To edit a figured bass indication already entered use one of the following options:

• Select it, or the note it belongs to and press the same Figured Bass shortcut used to create a new one.
• Double-click it.

The usual text editor box will open with the text converted back to plain characters ('b', '#' and 'h' for accidentals, separate combining suffixes, underscores, etc.) for simpler editing.

Once done, press Space to move to a next note, or click outside the editor box to exit it, as for newly created figured basses.

Style

To configure how figured bass is rendered: from the menu, select Format → Style… → Figured Bass.

• Font: The dropdown list contains all the fonts which have been configured for figured bass. A standard installation contains only one font, "MuseScore Figured Bass," which is also the default font.
• Size: Select a font-size in points. Note: This value is also modified by any change made to Scaling (Format → Page Settings…), or Scale ("Staff properties").
• Vertical Position: The distance (in spaces) from the top of the staff to the top margin of the figured bass text. Negative values go up (figured bass above the staff) and positive values go down (figured bass below the staff: a value greater than 4 is needed to step over the staff itself).

• Line Height: The distance between the base line of each figured bass line, as a percentage of font size.

  The following picture visualizes each numeric parameter:

• Alignment: Select the vertical alignment: with Top, the top line of each group is aligned with the main vertical position and the group 'hangs' from it (this is normally used with figured bass notation and is the default); with Bottom, the bottom line is aligned with the main vertical position and the group 'sits' on it (this is sometimes used in some kinds of harmonic analysis notations):

• Style: Choose between "Modern" or "Historic." The difference between the two styles is shown below:

Proper syntax

For the relevant substitutions and shape combinations to take effect and for proper alignment, the figured bass mechanism expects input texts to follow some rules (which are in any case, the rules for a syntactical figured bass indication):

• There can be only one accidental (before or after), or only one combining suffix per figure;
• There cannot be both an accidental and a combining suffix;
• There can be an accidental without a digit (altered third), but not a combining suffix without a digit.
• Any other character not listed above is not expected.

If a text entered does not follow these rules, it will not be processed: it will be stored and displayed as it is, without any layout.

Summary of keys

Type:	to get:
Ctrl+G	Adds a new figured bass group to the selected note.
Space	Advances the editing box to the next note.
Shift+Space	Moves the editing box to the previous note.
Tab	Advances the editing box to the next measure.
Shift+Tab	Moves the editing box to the previous measure.
Ctrl+1	Advances the editing box by 1/64, setting the duration of the previous group.
Ctrl+2	Advances the editing box by 1/32, setting the duration of the previous group.
Ctrl+3	Advances the editing box by 1/16, setting the duration of the previous group.
Ctrl+4	Advances the editing box by 1/8 (quaver), setting the duration of the previous group.
Ctrl+5	Advances the editing box by 1/4 (crochet), setting the duration of the previous group.
Ctrl+6	Advances the editing box by a half note (minim), setting the duration of the previous group.
Ctrl+7	Advances the editing box by a whole note (semibreve), setting the duration of the previous group.
Ctrl+8	Advances the editing box by two whole notes (breve), setting the duration of the previous group.
Ctrl+Space	Enters an actual space; useful when figure appears "on the second line" (e.g., 5 4 -> 3).
BB	Enters a double flat.
B	Enters a flat.
H	Enters a natural.
#	Enters a sharp.
##	Enters a double sharp.
_	Enters a continuation line.
__	Enters an extended continuation line.

Note: For Mac commands, Ctrl is replaced with Cmd.