The <principal-voice> element
Parent element: <direction-type>
The <principal-voice> element represents principal and secondary voices in a score, either for analysis or for square bracket symbols that appear in a score. The content of the <principal-voice> element is used for analysis and may be any text value.
Content
Attributes
| Name | Type | Required? | Description |
|---|---|---|---|
| symbol | principal-voice-symbol | Yes | Indicates the type of symbol used. When used for analysis separate from any printed score markings, it should be set to none. Otherwise if the type is stop it should be set to plain. |
| type | start-stop | Yes | Indicates if this is the start or stop of the principal voice. |
| color | color | No | Indicates the color of an element. |
| default-x | tenths | No | Changes the computation of the default horizontal position. The origin is changed relative to the start of the entire current measure, at either the left barline or the start of the system. Positive x is right and negative x is left. This attribute provides higher-resolution positioning data than the <offset> element. Applications reading a MusicXML file that can understand both features should generally rely on this attribute for its greater accuracy. |
| default-y | tenths | No | Changes the computation of the default vertical position. The origin is changed relative to the top line of the staff. Positive y is up and negative y is down. This attribute provides higher-resolution positioning data than the placement attribute. Applications reading a MusicXML file that can understand both attributes should generally rely on this attribute for its greater accuracy. |
| font-family | font-family | No | A comma-separated list of font names. |
| font-size | font-size | No | One of the CSS sizes or a numeric point size. |
| font-style | font-style | No | Normal or italic style. |
| font-weight | font-weight | No | Normal or bold weight. |
| halign | left-center-right | No | In cases where text extends over more than one line, horizontal alignment and justify values can be different. The most typical case is for credits, such as:Words and music by Typically this type of credit is aligned to the right, so that the position information refers to the right-most part of the text. But in this example, the text is center-justified, not right-justified. The halign attribute is used in these situations. If it is not present, its value is the same as for the justify attribute. For elements where a justify attribute is not allowed, the default is implementation-dependent. |
| id | ID | No | Specifies an ID that is unique to the entire document. |
| relative-x | tenths | No | Changes the horizontal position relative to the default position, either as computed by the individual program, or as overridden by the default-x attribute. Positive x is right and negative x is left. It should be interpreted in the context of the <offset> element or directive attribute if those are present. |
| relative-y | tenths | No | Changes the vertical position relative to the default position, either as computed by the individual program, or as overridden by the default-y attribute. Positive y is up and negative y is down. It should be interpreted in the context of the placement attribute if that is present. |
| valign | valign | No | Indicates vertical alignment to the top, middle, bottom, or baseline of the text. The default is implementation-dependent. |
Examples
This element is used in the following examples: