What is the message of the song Aoi Shiori?

Question

What are the more subtle messages held in Aoi Shiori? I think the English translation lacks a bit of the deeper undertones of the Japanese song. Please answer the following questions:

1. What is the meaning of this?

   どれか一つをえらべば　音をたてて壊れる

   If you choose any one, it will break with a sound - That is what love is, I joked, and you laughed.

2. Is it known what "the two of you" refers to? In the Japanese lyrics, is it known if "the two of you" refers to the "narrator" and the person he's singing about? Or is it the person he's singing about and someone else?

I'm trying to learn some vocabulary from songs and answers would be awesome. If there's any other subtext that I'm missing please don't hesitate to add it onto your answer.

Answer 1

The original Japanese lyrics are pretty vague, and they are full of puzzling and suggestive expressions. That said, apparently this song is about an indescribable anxiety of the boy (= 僕 = "I"), who probably is in love with each other (with 君 = "you") for now, but is worried because their current relationship is fragile for some reason. Even though they're happy today, he can't help worrying about the future, and that's why he keeps saying どうかしてるみたい ("There must be something wrong with me.")

The fantranslation in the link is pretty good overall, but seemingly there are a few flaws.

どれか一つをえらべば　音をたてて壊れる
"If you choose any one, it will break with a sound.
それが愛だなんて　おどけて君は笑ってた
That is love." — (saying so,) you were playfully laughing.

I think it is not 僕 ("I") but 君 ("you") who were joking here. The girl is (jokingly) saying something like "If you decide to gain someone's love, it can never be achieved". Taking the context into consideration, I feel this implies something along the lines of "You can never control someone's mind, so take it easy, what happens happens." She doesn't seem to be as worried as the boy.

Regarding your second question, I think there are only two people in this song, which are 僕 (= "I") and 君 (= "you"). So this 二人 (lit. "two people") should have been translated as "the two of us."