NoteNames and alternative note names

[tomas]

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Dear Lilipondians

(or should I say Lilyponderers ;)

I'm trying to typeset notes with "alternative" names (i.e. not c, d, e
etc, but i, o, e, u, a --  as is customary in Balinese Gamelan).

Now there are nice examples of how to do that, e.g. in espanol.ly

The scores are sometimes for people who are not so proficient at reading
classical notation, so I'd like to put the names above (or below) the
score. NoteNames to the rescue. Or not?

The problem is, I get "h", "c" and so on, instead of "i", "o", as can be
seen in this little snippet:

    \include "espanol.ly"
    notes = { do re mi do }
    \new Staff
    \set Staff.instrumentName = "lala"
    <<
      \notes
      \context NoteNames { \notes }
    >>

(I've used espanol.ly for the example to keep it as small as possible;
the current version of gamelan.ly is attached for the curious).

Thanks for any pointes. I'm somewhat comfortable with Scheme, but I
haven't yet managed to get a feeling of the whereabouts within Lilypond.

The version I'm using is GNU LilyPond 2.12.2 on Deebian GNU/Linux

Regards
- -- tomás
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