I have a bunch of sheets that I'm transposing on demand for specific instrument or voice ranges. For that purpose I need to build a database with the melody range of each sheet, so I can tell if it fits in the target range of the transposition. I've been trying to figure out how to piggyback on the ambitus functionality, which extracts the range and adds it at the very beginning of the output, before or right after the clef. Instead of putting it in the output, I'd like to just print something out that specifies the low note and the high note in LilyPond absolute format, e.g.
Low note: c' High note: a'' I don't think this will be too difficult, especially since I can probably modify the Scheme version of ambitus-engraver that's included with documentation, to print something on the terminal output instead of engraving it in the sheet. However, I would also like to mark certain notes in the input as not being included in this calculation. Sometimes there are snippets of accompaniment that are in the same staff, but don't count in the melody range. I want these notes to be engraved as usual, but I want to mark them with a property that I can query in order to exclude them from the range. I'm hoping this could be something simple to add to the input files, so that a sequence of notes could be bracketed with a command to indicate that they don't count in the melody range. Any and all advice is welcome!
