On Fri 02 Jul 2021 at 13:15:07 (+1000), Mark Probert wrote: > Another newbie question. How do I hide a key engraver after the first > instance? I want it at the top, then not on the following staves, which > is the default behaviour. I'm sure there is a hide.engraver-thing > somewhere...
Put \omit Staff.KeySignature anywhere after the first measure of music. Any earlier and you might not get even the first one. Cheers, David.