I think it is better to use "Bird Poetry".

It is a song from the animation "AIR". In addition to the music box version and piano version that everyone is more familiar with, I personally think that the version with lyrics and a faster rhythm is more suitable for the climax of the stage play.

AIR is also about the tragedy of love. Personally, I think it is no less than Romeo and Juliet...so the two should have something in common...