Yes, the note I pointed out in Chopin is the note giving me the most trouble. When hitting that G, my finger would sometimes mash one or both of the black notes next to it. I'm not sure if I'll be able to completely avoid that, but I think the advice on here is helping.
Not long, a month maybe? And in that month maybe an hour a day. I practice different pieces to make practice more enjoyable.
It is ok to brush up against adjacent notes without playing them. In some cases it is unavoidable. Feel the keys and caress the keyboard. You need to develop a tactile sensitivity to selecting the keys you wish to play while allowing physical contact with adjacent keys.
That is not long at all. It needs more time to get into your fingers as well as mature in your mind. Many of our difficulties in playing a piece can be resolved by thinking them through thoroughly."
It used to take me 1 hour to get to my teacher's studio. The effort was well worth it. Don't rule out studying with one.
^ I agree. And this is my dilemma. Trying to give correct volume/tempo without brushing another key with any real force. At intended tempo in these cases, the difficulty of good execution seems to require far more ability than almost any other part of the piece, the piece being quite a feat to begin with.
I think such cases are extremely rare- except for those with extremely thick fingers. I wouldn't say that brushing the adjacent keys would exactly be a disaster, but I wouldn't say it's "ok" to do it either. It is a sign of imperfect movement. In both cases, it should be possible to get between the black keys 100% cleanly without too much bother. Contacting adjacent black keys (except with the absolute faintest of touches against the sides, perhaps) leaves too much risk and uncertainty. The finger ought to be cleanly between them at once, if consistent accuracy is the goal.
I would have to disagree here. Harnessing the ability to brush against adjacent keys while playing others will increase one's accuracy by manyfold. Developing ability of tactile sensitivity to the surrounding elements of the keys one is playing creates an additional mechanism for security in accurate playing.