Which is why working together will no doubt be advantagous to all of us.

[And that's just his way of saying, he doesn't expect you to]

Oh it's quite simple.

[Moves the accoridian over to show him]

The keyboard is on one side and the buttons are on the other. You use them while pumping the instuament so the air flows through and creates the sound.
It takes time to memorize all of them but there are only so many notes after all.