Consider the following:
(Chopin At the Piano - Verlag)
Should the grace notes be played before the beat or on the beat? I am reading a book on music theory, and it says:
(The AB Guide to Music Theory - Eric Taylor)
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Sign up to join this communityConsider the following:
(Chopin At the Piano - Verlag)
Should the grace notes be played before the beat or on the beat? I am reading a book on music theory, and it says:
(The AB Guide to Music Theory - Eric Taylor)
This is the kind of question where even the experts are not in agreement as to exactly what Chopin intended. Since nobody really knows for sure, you can interpret it either way. All you need to do is make sure your interpretation sounds good. I suggest trying to play the grace notes on the beat, but don't worry if they end up "across the barline". Just let the melody flow naturally.
Short answer: Play it how you like. Chopin died more than 100 years before this particular piece was published, so we may know even less about it than some of his other pieces. It was published and became well-known at a time when the tastes of performers were somewhat different than what we believe them to have been in Chopin's time.
This is the first Chopin piece I learned as a student (about 1984). I have it in Chopin: An Introduction to his Piano Works, edited by Willard Palmer, Alfred Masterworks Edition, 1971. Since this piece was published posthumously, the autograph was missing dynamic and pedal notations. Palmer adds these, and also adds a dotted line between the A bass note and the B of the appogiatura in measure 18, similar to what you showed from The AB Guide to Music Theory. Also, the first grace notes in the piece (at measure 4) have a comment: "All the appogiaturas should be played quickly and on the beat."
The introduction to Palmer's book goes into great detail regarding ornamentation (some 7 pages of the introduction), and is essentially in agreement with your second excerpt. I'm sure there has been further research into the topic since it was published, but the gist of it is to say that many 20th-century interpreters of Chopin played his works in a style more typical of the European Romanticists, but Chopin's style was formed in his earlier years and was more in line with the classical interpretation, where the appogiaturas are played on the beat and their values subtracted from the main note that follows.