I meant to comment on this thread a few days ago but got busy (with MRIs, doctor visits, etc. ack!). This is one of my favorite pieces on the piano, showcasing Chopin’s brilliance. Since I’m new to the accordion I’m not ready to even think about trying that! In fact I haven’t even played it on the piano for years but when I sat down recently my fingers still remembered much of it! (I was surprised)
First, the piece IS generally thought of as a waltz, or at least waltz-like, but soft and quiet as suggested by the ”Nocturne” descriptor and, of course, Chopin’s instructions. And while I certainly agree that the “oom pah pah” sound isn’t right, I’m having difficulty imagining how it can be played effectively on an accordion lacking individual key dynamics in both hands, especially how to express the chords to bring out the prominent top note ”melody” in the left hand on the piano score. Those chords are mostly but not always simple inversions creating a beautiful and haunting sonic landscape under the incredible right hand melody - I think the piece would be significantly compromised if the two chords in the left hand were not somehow distinguished. As an accordion newbee I‘m not sure how that could be done without significant expertise, at least on a stradella bass keyboard.
The point about the apparent bass staccato and pedal conflict in the original score is one I asked my own piano teacher (maybe 40 years ago!) I was taught to think of it more as an accent than a “real” staccato. A youtube search brought me this video which explains this better that I’ve heard anywhere. In fact, it’s the best I’ve seen at describing the entire composition (at least on the piano, of course). He (Antune) talks about the staccato early in the video at about 1:24 and again later, and elsewhere resolves the seeming conflict about the various pedal markings throughout the piece.
As a piano player I give the video 5 stars but the overall insight he gives could be useful for any instrument. I imagine it could be beautiful in a trio, maybe with at least one accordion. Oh, he offers a free download of the piano sheet music (with his fingering) which might be useful.
Antune’s interpretation in this video inspired me to relearn the piece on the piano from scratch - unfortunately with surgery scheduled Thursday for a left shoulder AC separation it will probably be a few months before I can start
(the recent injury also tanks my accordion progress for now but that’s life!)
JK