The 1st 2 pages of the 4th ballade is the hardest thing I've ever had to play! It's the most impossible thing to do. It can't be expressive, yet at the same time must have some. It has to be still, yet must have direction. It's full of such sorrow, the whole thing is just one big question. The C F E Bb Db is the most profound musical statement ever! I mean it just sits there, never answered, it's like a question. The DbEbDbEb bit after still doesn't answer it. Its the hardest thing to play, the sound has to be perfect. It's so simple, there is only 2 parts to this section...the bass, and the soprano. The chords are there as accompnient and nothing esle, a lot of people think that it has huge melodic importance, and bring out the thumb line etc.. bit thats wrong.
The piece must be restrained all the way up to the coda. Again this is so hard to judge because it is so easy to play fff in some sections. Really learn all the voices seperatly, and know them, so that you can hear them all, and think about bringing them through all the time, yet having the melody at the same time.
The coda is so hard becasue everyone plays it fff! If you really calm it down, you'll get the ff by voicing it properly. I hate most peoples coda, it just sounds like an extra section added on to a piece. You have to make it musical, and not some double not excersise.
The 4th ballade is in my opinion the greatest piece of piano music ever composed.