What prompted this and why does it not?
It's not the 19th Century. You don't need to punch holes in cards to help the machine "think" any more.
> You don't need to punch holes in cards to help the machine "think" any more.
That's literally what "prompt engineering" is, though.
"Transpose this MIDI file down a third" requires neither a specialized data format nor fancy prompt engineering. ChatGPT asked: "A) Major third up (+4 semitones) or B) Minor third up (+3 semitones)" then did it.