Вы объяснили музыку словами.
You used some words for music explanation
Но, видно, ей не надобны слова —
Apparently, it does not really need the words,
Не то она, соперничая с вами,
It otherwise itself would use them for persuasion
Словами изъяснялась бы сама.
To argue you, forgetting perfect fifths and minor thirds
И никогда (для точности в науке)
And would have always been on scientific grounds
Не тратила бы времени на звуки.
Without wasting time on those unconvincing sounds.