Actually, it's pretty straightforward to learn structure-wise, but the pitch and vocal inflections don't come naturally to a human.
He was, indeed, at the moment too busy to analyse vocal inflections.
But I don't think we are trying to copy vocal inflections or mannerisms.
I've tried to get the vocal inflections as they were.
She's also learned a few guitar chords and vocal inflections from U2, but there's far more to her music.
The meaning of this depends critically on vocal inflection.
"And it can be decades before you ever get free of their vocal inflections."
T4S had acquired vocal inflection; it might have also learned to read human expressions.
She might change a vocal inflection and contribute a lyric here or there, but that would be the extent of her 'writing'.
Take care not to raise your vocal inflection at the end of the declarative sentence as though you were asking a question.