Since my performance experience is mostly in music after 1850, and since my instrument (tuba) very rarely has any grace notes, I've been mixed up for some time on how to play grace notes in different musical eras.
Specifically, how are grace notes played differently when they're written in the Classical style versus being written in the Romantic? (Perhaps the dichotomy isn't fair and is much more nuanced than that.) What about a composer like Beethoven, who straddles the two eras? And is there a similar rule for modern music, or does it vary by composer?
Different types of grace notes and Grace notes in Minuet by Boccherini both come close to the answer, but neither discuss the specific distinction I'm looking for.
I'm asking about grace notes for all instruments and for all historical eras. Ultimately the question is this:
Given a sheet of music with an acciaccatura and/or appoggiatura, how do I know when to play them on the beat compared to off the beat? If it's an issue of when in history the piece was written, what are these guidelines?