If poetry is the music of words, then mine is a joyful tune—in a minor key.
Some verse variations you know will not make it to the final work, but you nurture them regardless for the sheer joy of the exercise.
There is truly no predicting the outcome of a composition. As one explores a poem’s theme (“To a Swallow” in this case, but it is true of every other work), one is constantly amazed by the interesting ways in which it may be expressed. (Of these, some are good and some are bad, but now and then, one writes something so excellent—at least in one’s own estimation—that one can scarce believe one’s luck!)