This sounded to me like something you might read for the lyrics of something translated from another language, some old folk or religious song. I only speak english and bad high-school spanish, but I might try to do something with it.
How long how long since i wrote someone else's song
Who's gonna tell me this? Who says anything?
How long how long since I heard someone else's song?
Who knows anything?
Where was I when I heard it?
What was it that I heard?
Everything rhymes somewhere
Everything makes someone's kind of sense.