This has to do with Chopin editions.
I have a edition of Chopin waltzes -- Vol. 9 in the Complete Works edition (ed. Paderewski, Warsaw: 1950). This is a scholarly effort. It contains all 17 of the Chopin waltzes. Here's the problem.
I'm currently playing two of the waltzes -- Opus 69, No. 2; and Opus 70, No. 2.
Both waltzes are printed in the book in two versions -- each is printed in the posthumous edition of J. Fontana, who apparently was a celebrated editor of Chopin's work. The Op. 69, No. 2 is also printed in the Oxford University Press edition. The second one -- Op. 70, No. 2 -- is also printed in a second edition (other than Fontana's) which claims to follow several very similar holograph versions currently held in the Paris Conservatore. [Holograph means -- in Chopin's own hand.]
Here is my question. Which version would professional concert pianists probably choose to play? I have an old recording of Artur Rubenstein's waltzes -- Rubenstein was a brilliant performer of the waltzes. Which version would he -- or any other professional -- tend to choose?
And if you are a really advanced pianist, and have a scholarly knowledge of Chopin's editions, which version would YOU be playing?
Frankly, I am not sure the listener could easily detect the differences . For one example, some left-hand notes in the one edition are single notes, whereas in the alternate edition they are octaves. Not hardly enough to get all that excited about, right?