I would suggest you look at
http://www.svgopen.org/2005/papers/ScoreSVG2/index.html for details on making a musical score in SVG for use in your book. This would make the text scale and searchable while providing a flexible set of notes.
See also
http://www.svgopen.org/2003/papers/S...tionsInSVG/#S2
And
http://www.music-notation.info/en/formats/SVG.html
Dale