I had the Talharpa playing, but I did a rerecording and missed putting that part back and was running out of time.
My assessment of how I need to approach this in the future is to do more of an outline ahead of time, and record at a tempo I actually naturally want to sing at. I recorded it too slowly initially, so the issues with the timing weren't as apparent until I sped it up. To make it worse, I prerecorded it slow, then sped it up after rerecording.
I've decided I need to adjust my process after this jam, and be more deliberate about having a clearer process from start to finish.
Thank you for the feedback! :)