Hi devbanana,
Sorry, but I didn't know you were an aspiring concert pianist who has been studying piano 20 years when I wrote my first reply. I may not have replied at all and it certainly would have been quite different if I did.
So, I will take my chances and ATTEMPT to write a more appropriate response to your questions. I say ATTEMPT because I will be making most of it up as I go along. I ask you to KEEP THAT IN MIND when reading my post. In addition, your reading a response from an intermediate pianist with less that half your experience and it's quite possible that I will be wrong and/or not have any idea what I am even talking about.
I've heard some concert pianists take one day a week off, while others say that they feel like they will fall behind if they do.
I'm wondering what that could possibly mean, cause again, I have absolutely no idea. What does it mean when a concert pianist says that they are FALLING BEHIND? Are they Not building repertoire at an appropriate rate? Are they not maintaining repertoire? Are they not maintaining skills? Is it all of these and many, many more? How do I answer a question when I'm not really certain of all it's facets and/or implications?
My first thought is that, "A pianist should NEVER compare themselves with others". This is great advice, in general, of course, BUT maybe, just MAYBE, this is EXACTLY what an aspiring CONCERT pianist should be doing and/or thinking? I really don't know.
Let me ask you what does it mean to be a concert pianist? What SPECIFICALLY are you supposed to be able to know and do? Everything there is? That can't possibly be right. A more accurate childish answer from me would simply be, "A LOT"!
Can a concert pianist sight read anything, instantly? Maybe some can and some can't. I don't know.
Does he/she know all the Beethoven sonatas? All the Chopin etudes? Tons and tons of Bach? Have the ability to play insanely difficult pieces or learn them in a day? I don't know any of these things.
I will have to ASSUME that whatever the case may be, that TIME is perhaps the biggest commitment involved or at least a big part of it. I have read quite a few books on TIME MANAGEMENT and I think that everyone in all walks of life could benefit, IMMENSELY, if they did!
I've heard some concert pianists take one day a week off, while others say that they feel like they will fall behind if they do.
This suggests to me that SOME actually DO fall behind (whatever that means) and SOME DON'T!
Okay, Why could this possibly be true?
Well, if it's NOT necessarily the time (quantity) involved then maybe it's the QUALITY of time spent. This is a fact of life for pianists of all levels but must be, extremely true (I am making this up, remember?), for a concert pianist. What do you think so far?
This next bit just might be the most important part of this post. I think a planner is a necessity with every little detail not only accounted for but also what is the relative importance of that detail and how often does it need to be addressed and how will I make time for it. A highly efficient, well organized, goal oriented, well thought out individualized custom planner that works only for you is probably key to NOT falling behind. Without one, maybe a concert pianist practicing 7 days a week could fall behind while another practicing only 5 days a week leaves him in the dust!
I will make up even more stuff now. Some of this might be off the wall but I am only trying to help you help yourself and get you thinking about your planner.
Is is necessary to play scales at all or can I streamline this process? I like that word. STREAMLINE everything sounds right to me.
Eliminate scales, check. Eliminate warm-up or adapt it so that it is more productive. That sounds right to me. Some people just do scales and arpeggios in one key only and that is their warm up. Two birds one stone. I like it. Maybe entirely not appropriate? I don't know.
I am now, going to pretend that I am a concert pianist. Maintaining repertoire? What all of it? Are you kidding me? This can only become a larger and larger task I assume. STREAMLINE! How? I don't know. Maybe let some things go. I have lists and I'm only an intermediate. I'm not sure I would even want to read a repertoire list of a concert pianist considering how long it must be. I guess I would have a pretty good idea of how long I can leave something and what condition it would be in after various lengths of time and know approximately how much time is needed to bring it back.
Priorities. What are these? I don't know but it must vary from time to time and pianist to pianist. If there is an upcoming performance then maybe that is first and foremost the priority and neither building repertoire, nor maintaining one is.
Lessons. Taking them and giving them. Does a concert pianist even take lessons? I don't know but do doctors have doctors?
Does giving lessons cause one to fall behind. Maybe, Maybe not. I don't know. If it's a beginner or an intermediate student then maybe so. An advanced student could mean time saving opportunities for maintaining and/or analyzing repertoire and maybe on occasion the student teaches the teacher something!
Falling behind. Doesn't this happen to everyone anyway, all the time? I mean doesn't focusing on one thing mean neglecting something else in a way? I just mean that with a balance when one side goes up, the other side goes down, that's really all I mean.
Well this post is long and I am tired so...
I hope I have been helpful, Joe.