Thanks everyone for trying. I guess nobody recorded audio the way I described.
I don't want to use USB or MIDI out, or interface. That is pre-requisite.
Audio>Ipad's combined 3.5 headphone / mic port to AUX out of the keyboard That is what I want. The keyboard is Yamaha P-105.
I think this cable will do the job.
![[Linked Image from i.postimg.cc]](https://i.postimg.cc/BQYQXwP1/cable-3.jpg)