I'd like to know the background from the typefaces used in (hand engraved) music scores. I have looked at the text faces for setting titles, lyrics, tempi and dynamics. Music symbols is another interesting subject, since there is a great decline in typographical standards when comparing computer scores to traditional scores. There is no digital music symbol font that I know of that has attention to all the details that you would find in an engraved score.
Fortunately I have a large library of musical scores, most of which are still hand engraved (from dover publications, many edition peters, etc...). Since music engraving had reached most of it's form in the 19th century, I found that the typefaces used were mostly modern (neo-classical). Titles are mostly modern (display) faces, but other faces, including slab serif are also used. For lyrics also the modern face was often used, but not exclusively. I've found that tempo markings are exclusively set in bold modern, and dynamics in italic modern.
When I looked through "typefaces for books", I found that the font the resembles these the most are modern scotch, rather than the bodoni and didot. The italics look rounder and also the roman t ends in an upwards shape. I have many books, reprinted from old editions that use this font (Forsyth Orchestration, Harry Olson music physics and engineering, Raleigh the theory of sound). Also Donald Knuth's Computer Modern Roman was based on this design.
I would like to know what is the history behind these faces. "Typefaces for books" describes the design as "late transitional", rather than modern, although they are mostly described as modern. They do not seem to be based on Didot or Bodoni.