
As standard, Embedded TEX 3.0 supports Lilypond, the open source music typesetting system. This allows you to generate professional quality music directly in your documents - perfect for students, teachers, forewords to pieces and anyone discussing music.
Before you can make use of Embedded TEX to write mathematics in Word, you will need to install Embedded TEX.
From the Insert menu, choose Object...

Choose "Embedded TEX" from the list and click OK.

This dialog box is the "preview dialog". To switch to music mode, select the Lilypond application, and the Music template. To start with, we'll just add a couple of notes:

As you can see, Lilypond has automatically formatted the music in style. Click OK to see this fragment in Word.

If you want to change a music fragment, just double-click on it.
The default settings when you insert a new Embedded TEX object are designed for mathematics. If you would prefer to insert music by default, you can do so from the configuration utility. On your Start menu, choose All Programs, Sunlight, then Configure Embedded TEX.

Right-click lilypond in the application list and choose "Set as default". Right-click Music in the template list and choose "Set as default". The application and template will turn bold to indicate they are the new defaults. Click OK to save.
The default Embedded TEX environment is set up to produce output for your screen. This generates the smallest files. However, if your document is intended for the printer, you may instead wish to change the fragment to be optimised for printing.

This give you a high-quality fragment on paper, which takes a little more time to generate, and will make your document size slightly larger.
Lilypond notes are specified using their pitch and their length. The basic pitch is specified by the seven letters of the scale, c to b:
c d e f g a b

To raise the pitch by an octave, use the single quote character:
c d e f g a b c' d' e' f' g' a' b' c''

Notice that two quote characters raise the pitch by two octaves. To lower the pitch, use a comma:
c b, a, g, f, e, d, c,

You can switch to bass clef by using the \clef command:
\clef bass c b, a, g, f, e, d, c,

To make a note sharp, append is to the note. To make it flat, add es.
c' dis' ees' fisis' geses'

To specify the length of a note, put a number after it. When you set the length of a note, notes that follow it that do not have a length will use that length. To obtain a dotted note, just add a period after the number.
c'1 c'2 c'4 c'8 c'16 c'32 c'64 c' c'4. c'8

To set the key signature, use the command \key pitch type, where type is either \major or \minor.
\key des \major ges'8 g' ges' g' ges' g' ges' g' ges' aeses' ges' aeses' ges' aeses' ges' aeses'

Rests are just like notes, using the name r.
c'8 r fis' g' r4 g' r1

For a complete guide to Lilypond, consult the documentation.