The entire notion of bitmap tracing for music in SVG is probably the wrong direction. When you generate a PDF with something like Finale, you aren't generating a bunch of lines. Your staff lines are lines, but everything else is just a placed font glyph, which means it's just a few bytes of text in SVG per musical symbol. That *should* be fairly efficient when compared with a PNG file, at least after you compress the book.
Of course, then you get the whole font licensing question—you'd have to contact the font vendor for details on that—but that's a separate issue.
|