"Psycho Killer" as performed in the concert is a solo acoustic number, so we'll start off with The National for that; but then "Thank You Sending Me An Angel" is also kinda twangy & cowboy rhumba-ish, so?
I'd love to hear Mylie Cyrus sing "Heaven" - should go dig into her Gospel roots and really spiritualize it
David Byrne uses a weird vocal styling on "Swamp" so let's give that to Lorde
"Life During Wartime" is made for The Linda's Lindas, as kids who've grown up in a life during wartime
Money Mark was The Beastie Boys keyboard player, and "Once in a Lifetime" has that great part opening it up; I'd like to see what he could do with it
Since it was originally a Soul record, and Chicano Batman can bring the funk, let's "Take Me (them LOL) To The River"
That's my list, off the top of my head. I'll have to listen more to the other participants and return - and revise if need be