I have been practicing keyboard for a year now and I can play scales, Chords and some songs nicely with right hand, with left hand I play with a 50% speed as that of right hand.
I am trying to practice hand coordination by using 2 ways
A: Chord progressions in left hand while right hand plays something like scale or melody
B: Playing scales in contrary motion.
But When it is comes to making both hands coordinate while in a song, I am finding it difficult. Additionally, while playing the songs, The inevitable action of changing/interacting with voices/styles through registration banks in keyboard also causes trouble in staying on beat and in hand coordination. Due to this action, there is a delay introduced in the song or causes to miss a beat if I change in parallel, which I feel is not OK.
I have come across many sites, YouTube videos, courses, people who suggest different hand coordination exercises and exercises making your fingers fast, left hand stronger. I am wondering "how will these exercises build the hand coordination ability in me for every song that comes my way" Technically, how do those skills get applied to various songs? OR is it that for every song that I would be selecting, I will have to always go through the process of hands separate and then hand together.
The later part I don't want to believe because I have seen some of my tutors/experienced friends directly get on a song the first time and come out with the song played perfectly with great coordinated hands (including correctly interacting with the keyboard registration banks in parallel); I always wonder how they got to this point!
Are there any exercises out there which when practiced will help me build hand coordination ability to such an extent?
Are there any such exercises that gradually build/develop that ability in your hands to coordinate hands perfectly on RHYTHM (I miss the beat many times), that develop ability in your hands and fingers to play fast, jump across multiple keys, to play chords and melodies very very smoothly? If yes, I would like to have those included in my daily practice routine.
Should I be practicing those exercises life long? Can someone please please point me to any such site or course or a tutor who can give me that?
What is the process/way of interacting with keyboard registration banks while the hands are focused on coordinating with each other? Any good help is really appreciated