How important is being a piano performer?

Hey folks!
So without any doubt the hardest and most energy and time consuming discipline for me is being a piano player.
Here and then I find a piece that I would like to learn to play on the piano and record myself performing it. The transcribing on piano part and doing an arrangement/reduction (however it is called) is no problem, but to be able to play it in one take since I record a video of my performance (like in this video) just takes so much time and effort. Even if the piece is not too demanding to perform like this one (apart from couple tricky moments) it takes me weeks of practicing pretty hard. Often times I even simplify what can be simplified without losing the essence of the piece, I am not looking to develop any kind of "killer" playing technique, just want to be able to find my way on the piano or learn a simple or simplified song two-handedly quickly enough. I know that piano is a time consuming instrument, maybe my problem is also that I am comparing it to when I was playing guitar in a pop/rock band. Back then I was able to transcribe/arrange/practice around 3 songs that are not demanding technically, in a day so that I can perform them tomorrow live (I could actually do even more but 3 a day was a healthy amount to memorise everything properly).
Other than learning and practicing the exact pieces I don't practice anything else more "general" on the piano, but I am pretty sure that I practice effectively, I generally just make sure and adapt everything so that I do as least as possible mistakes when practicing, first do left and right hands separately each, then join them, take little breaks often, go practice other part when I feel that I am not improving as much on the current one, practice with metronome until the very end when I start to play the whole piece to play with some tempo changes if it goes with the piece etc.
Are there any "general" exercises that could make it easier?
I mean over the couple years that I here and there learn a piece I still feel nice improvement but still I sometimes feel that I could achieve much more by doing transcriptions, composing, orchestrating and everything else instead of practicing to perform one piano piece in a take. I admit it feels like quite an accomplishment when I play that take and it possibly wouldn't feel that significant if I were to do only audio maybe and overdub hundred times to sculpt the performance or whatever.
Really curious on your insights on time management for piano practice.
Oh and of course even though this is not primarily "Critique and Feedback" category I would also gladly hear any feedback on transcription, piano technique or anything else for this piano cover I just did.
Cheers!

Marko

Oh and here is the version of the song I transcribed on the piano

 

Thank you very much Doug and Mike for (p)reviewing my performance .

Yes, I have been playing by heart my whole life since I transcribe by ear, not much by reading sheet music and that way I would also have to write the sheet music down since those are always my piano arrangements. I memorise everything pretty fast, way before I can play it properly. I was never good in real time improvisation, but I never really practiced it though.

Nice ! That is an impressive skill, however I personally am not sure if I would pursue it that far, playing pieces on piano is really a secondary thing for me, just to have some music under my fingers that could maybe help me when composing and for analyzing pieces in a convenient way on a piano (but as I said it takes me much more time and effort than anything else, at least to play it like this in one take) when I transcribe them by ear and of course to be able to deliver a performance by myself if I happen to write something for piano (but then I guess it wouldn't be necessary to do it in one take). I am not anymore pursuing playing live.

Well for what is worth, I feel relaxed and without any tension when playing. I sometimes don't actually press the keys in fact I kind of bounce my hand of them so that is where some of the movement comes from, I could pronounce it even more for a kind of "flashy" performance hah xD without any tension.

Hm, even when there is a lot going on on black keys? In that case if I round my fingers I find it relatively easy in some cases to miss those black keys so I straighten them in that scenarios.


I had piano lessons for about a year and a half in music school in classical manner, although it was long enough time ago. But my mom used to be a piano teacher, classically trained (she still plays, not professionally, just for herself) so I sometimes consult her for some fingerings that I am not sure how to do or anything else that I have problem with. I don't have formal lessons with her but she sees what I am doing and she never gave me remarks like these, so that is very interesting.
Maybe since this piece is a bit slower I do it more because there is room for more movement, I don't know. But don't get me wrong I am not trying to defend myself in any way, I will look into it. I take anything that will help me to practice more efficient resulting in less practice, even if it is correcting habits which sounds pretty painful heh.

 

I have heard that some people practice while watching something with good results, I personally focus completely only on practice, just my preference. Yup, I also don't focus much on musicality and increasing the tempo at first, going up with tempo is easy once it is played properly slower and written in muscle memory.