At WM2014 when we had the Wikisource meet-up, there was mention of having
better help pages for music notation to align with [[mw:Extension:Score]].
I would like to point to the existing pages at English Wikisource that
other wikisources may wish to use as the basis of local language pages. To
note that these pages have no interwikis, so it could be that other
languages either do not have such pages, or we lack some interwikis. (And I
cannot remember whether we can or cannot iwlink these pages through WD)

Following is the pages, and the sections within them.

Regards, Billinghurst

[[s:en:Help:Sheet music]]  has redirect Help:Music, Help:Score
    1 Overview
    2 Transcribing music
    3 General notes on writing with Score
    4 Maintenance templates
    5 LilyPond
        5.1 Basic LilyPond notation
        5.2 Lyrics
        5.3 More LilyPond notation
    6 ABC notation
        6.1 Notes
        6.2 Header lines
    7 Audible output
    8 External links
        8.1 LilyPond
        8.2 ABC

[[s:en:Help:LilyPond]]
    1 Commands
    2 Notes
        2.1 Relative notes
        2.2 Absolute notes
        2.3 Accidentals
        2.4 Polyphony
        2.5 Repetition
    3 Multiple staves
        3.1 Staff group
        3.2 Grand staff
        3.3 Nested staves
    4 Lyrics
        4.1 Manual durations
            4.1.1 Associated voice
        4.2 Additional notes
    5 Partial measures
    6 Key signatures
    7 Repeats
    8 External links


[[s:en:Help:List of musical symbols]]
    1 Simple
    2 Accidentals
    3 Clefs
    4 Rhythm and key
    5 Dynamics
    6 Articulations
    7 Ornaments
    8 Repetition
    9 Bar lines
    10 Other
    11 See also