Hal 9000 said:
And so the Palptine speech we have without music isn’t actually McDiarmid? Even so that may be the best bet: use it to recreate idir’s dialogue choices and start the scene with it playing to replace Poe’s opening lines. Idir’s version feels much better than the original dialogue.
I think the link from idir‘s post is the original file and McDiarmid: Here’s the broadcast with no music (with SFX)
https://youtu.be/Fmu08wCZJr0