on death row: "Gotta Get a Message to You" since I'd love for him to just keel over at the podium.

On pipe organ. Played in a very sinister style.

On a continuous loop.

It’s basically a musical cautionary tale about an ordinary citizen being elevated into a position of political power who becomes corrupted and leads his followers to ruin.

Very prophetic!

Mine is John Williams' Darth Vader theme from Star Wars

as long as it gets played on the swinette, which decorum prevents me from giving an in-depth explanation. Urban Dictionary does a good, job, however.
https://www.urbandictionary.com/define.php?term=Swinette
I especially like the 2nd definition

Also since I'm persistently pedantic, if you mean the Beck song, it's just called "Loser"

many years back at Anderson Fair, in which he inserted a jaunty “M*****F*****” into every chorus.

(May I also comment that he always introduced himself on stage as some ne’er-do-well &/or creep of the moment - Charlie Sheen comes to mind as an example - and in Dan’s last appearances just before he passed, he was introducing himself as DT.)

Maybe add some Psycho Killer by the Talking Heads as he leaves.

Talking Heads.

from the 1958 movie, Gigi. Good grief, what a shameful mess we are in with him as President.

(Radiohead). ~ But, in this case - Resident Pedo really IS one.

Any song named 'See Nile'?

from How the Grinch Stole Christmas.

Throughout December, whenever I heard that song in a store or on the radio, it conjured up a mental image of the Grinch in a long red tie and an ugly yellow mop on his head.

The lyrics fit so perfectly, especially, "stink, stank, stunk."

As pertains to the subject himself, as well as his minions of misinformed followers.

For all his torture and abuse he applies to our species of animal. And power point images of caged, starving people. I would bet many images of those humans (we can’t just say brown anymore) in his cages look just like those of the dogs and cats from the commercials to raise money to save them.
Cold, shivering, starving, sick, matted eyes and hopelessness in their faces.
MAGA!

Psycho Killer.

and there are so many great choices from others. It really makes a statement when there are so many easily found themes. Fun and sad together but you hit it right.

Please let it be.

With an appropriate Dead March into the Chamber.

Exquisitely fitting.

Although I think your choice is the best I’ve seen so far.

Except replace "My Darling,' with "You A-Hole!"

Over and over.

Woe to you, oh earth and sea
For the Devil sends the beast with wrath
Because he knows the time is short
Let him who hath understanding reckon the number of the beast
For it is a human number
Its number is six hundred and sixty-six

Kesha's song about dinosaurs hitting on young girls seems appropriate.

Let’s watch him dance till he collapses!

or Crimes in the White House by Neil Young.