Piano Forum

So I am reasonably good at the piano, had some training maybe 10 years ago and took it on more of a hobby rather than any thing serious. I picked up this piece last week and not having too much trouble with it however my theory is a little rusty.

I believe them to be called mordents? - Short trills, something Chopin seems to love!
My understanding of them to be depending on the shape of the zig zag dictates whether you are short-trill the initial note and immediate above or immediate below.

My question is when it comes to multiple notes. I have attached examples. Can somebody please clarify with double note mordents am I supposed to quickly trill the single note above the top or both notes up and back? I have heard this piece enough to know how it should sound, but my fingers are struggling. In the first example I have been tying to play F+Ab with fingers 1-4, tril to the Gb-Bb with 3+5, back down to F+Ab and then onto the next passage of notes Eb+Gb with 2-3.

If i'm unclear, please let me know. I assume if it's singular the notation would have just been grace notes. But my fingers do not like the quick double trill - specially that pinky!