Answer:
A.
Step-by-step explanation:
The author is obviously glorifying unheard melodies, I do not think he is really speaking towards option B. Here is why: The author is alluding to something deeper than purely physical "melodies". By melodies, he/she could be referring to music, words, or really anything that makes sound; I would need to see the rest of the poem(if there is any) to get a full on grasp of that. Anyway, the author uses phrases like "spirit ditties of no tone", and "not the sensual ear, but more endeared" . They are referring to something deeper inside an emotional or mental state of being, they are glorifying some type of melody that is not purely physical and can be heard by everyone, rather, they are leaning towards a melody that makes the listener "endeared" when he uses his "non-sensual ear". This could be his joy as he thinks of something that brings said emotion, or it could be something, like an idea, or an "unheard" melody that reminds the writer of just how beautiful creativity can be. If you wanted to look at it from a common sense aspect, I think the author could also be alluding to the fact that actions often speak much louder than words. Frankly, the poem is rather misty with the full on definition, but that is how poetry often is.
If it is B, the author could be alluding to the unheard melodies of nature, and how they are often sweeter than manmade melodies. But I think it is A.