"Nothing but flowers" by Talking Heads. It's so post-apocalyptic...despite the cheerful melody.

http://www.youtube.com/watch?v=Qo1aKvqjA0o

Kiddo, you're going to need to get him some Klaus Nomi, especially the tracks "After The Fall" and "Total Eclipse." New wave operatic post-apocalypse goodness.

"The Old Ones" and "Smoking Her Wings" by the Bats
both remind me of some story I read a long time ago but can't quite remember, maybe like Ursula K LeGuin or Octavia Butler.

anything godspeed you! black emperor (F♯A♯∞ ).
soundgarden - black hole sun.
something from john vanderslice's time travel is lonely

On the electronic music with a heavy space lean tip: Luke Vibert's 'Space Race'. It may be a little hard to find, but it should be out there. It has a bit of a 'Space Oddity' vibe with what sounds like a 50s or 60s sci-fi recording about being in space put through a voice modulator.

Also, even though its an instrumental, you can't beat the title: The Future Sound of London 'Eyes Pop - Skin Explodes - Everybody Dead'. Whoa.

The Doors' Ship of Fools came immediately to mind. "The human race was dying out..."

"Chemical Bomb" by The Aquabats

"Five Years" by David Bowie

"A New Dark Age" by The Sound

"Rocket U.S.A." by Suicide

"Monsoon" or "Heart in the hand of the Matter by" ...And They Will Know Us By The Trail Of Dead

"All We Have Is Know" by the Flaming Lips

"The Final Day" by Young Marble Giants

"After The Gold Rush" by Neil Young (The Flaming Lips do a good cover version)

"Extinction Level Event" by Busta Rhymes

"Armegeddon Days Are Here Again" by The The

"*******" by Jets To Brazil

"All Hail" by The Dirty Three

"Fear In the Western World" by Ultravox

"The Dead Flag Blues" by Godspeed You Black Emperor

Almost any song from Current 93 (especially on Black Ships Ate The Sky) or Chrome

You want nerdy? The Chorus of King of the World, by Steely Dan: "No marigolds in the promised land, there's a hole in the ground where they used to grow, any man left on the Rio Grande, is the King of the World, as far as I know."

http://www.youtube.com/watch?v=KiRIE2irAgc

Gary Numan - Down in the Park

Might be more dystopian than post-apocalyptic, but it's great. Foo Fighters did a nice cover of it, too.

Awesome idea, by the way.

There's a local band with post-apocalyptic as part of its hyphenated myspace genre:

myspace.com/nathanwade

josh is right on with godspeed you! black emperor ("raise your skinny fists like antennas to heaven" would also yield some good stuff). if you're shooting for more of an atmosphere of post-apocalypticism(?) anything from the second half of sigur ros' album () would be great (especially tracks 6 and 8).

Zager and Evans - In the Year 2525
The Troggs - Our Love Will Still Be There

I was going to make a hip-hop-alypse mix tape but I only got two songs in. Heres what I got.

Blackalicious - sky is falling
Pharcyde - storm

What kind of music does he like? Also, pretty much any '80s metal band has at least one song about nuclear apocalypse.

No one? No thought of this? Ok then...

Blackened by Metallica

http://www.youtube.com/watch?v=DU_ggFovJNo

tim
www.exitofhumanity.blogspot.com

I'm not sure if the lyrics really are post-apocalyptic, but the "Afghamistam" by Botch has a sort of creepy feel overall.

A couple of Black Sabbath songs come to mind, particularly Electric Funeral and Into the Void. And, don't forget 1999 by Prince.