Mark Probert <probe...@gmail.com> writes: > Indeed it is, Aaron! Thank you! > > I have to admit the disposition, or not, of braces confuses me. Seems like > they are optional in some places, and not in others, such as here. Is there > a rule behind when they are needed?
Braces are never optional. They form sequential music expressions. If the sequence only contains a single music expression, there may not be much of a difference in interpretation but there is still a difference in expression: if you use \displayLilyMusic, you'll see that every pair of braces inside is getting reproduced faithfully. In your example, you used braces to combine your music arguments into a single expression, and as a single expression, it would only serve for one of your music arguments. -- David Kastrup