Hi Jean, > I totally agree that the \instrumentSwitch and \addInstrumentDefinition > functions are useless. Just use variables. (Contrary to what its > name suggests, \instrumentSwitch isn't directly related to > Instrument_switch_engraver.)
Please take a look at https://github.com/openlilylib/snippets/tree/master/editorial-tools/auto-transpose and how \addInstrumentDefinition is incorporated there. Would you say variables are still better in that use case? Thanks, Kieren.
