Should have renamed this thread "schizophrenia ramblings". 
Hi, I have not been a piano much very but am a prodigy who is interested to very much playing the Ab song from Bach's wonderful Well-Tempered Clavier Book 2.
What, in your opinion, are the, as you admit, very much difficult, like a song, various qualities as to how much I should learn.
Should I learn the tempo first, and then the notes fast together?
Which of the records are the most noteworthy?
Master players who know how, can you please link me to your records?
How did I know if I play it right?
What if teacher does not approve and makes me do a different?