2 - move to OpusTeX fonts
3 - make own font-en-tja{10,11,13,16,20} files
4 - opustex/lilypond fonts from the same generic driver files
5 - LilyPond fonts should generate TFM spacing info
6 - include important spacing dims in TFM
7 - lilyrules.mf for different rules (lines) ?
8 - check out Adobe Sonata/Petrucci font layout. They are the
9 standard for Music fonts
10 - rewrite : make a metafont iso font