。
She especially likes music.
Literal
She [topic-は] above all music [subject-が] likes.
A textbook XはYが好き — the canonical 'X likes Y' frame, where the liked thing takes が rather than を because 好き is grammatically an adjective whose subject is the liked item. とりわけ sharpens the preference among an implied set of likes; it's interchangeable with 特に in most contexts but feels slightly more deliberate or written.