This is beautifully written. I'm not sure if it was purposeful, but I loved the subtle rhymes in
a foot planted firmly on either side
i am a crisis crossing the karma line.
I liked the title and the metaphor in it of comparing absence to a song. As well as that, the full stop at the end of it adds a note of finality and almost relent.
The way you don't capitalize letters makes the text look so delicate, and also how you present it, with gaps between certain lines and/or stanzas, like a pause.
It's so sad, but mesmerisingly written. I loved the uncertain way you finished it, as it was like a sigh.
Absolutely excellent:)