"Us and Them" is the sixth (on the 1994 CD version) or seventh track from English progressive rock band Pink Floyd's 1973 album, The Dark Side of the Moon. It was written by Richard Wright and Roger Waters and sung by David Gilmour (harmonies by Wright). It is 7 minutes, 51 seconds in length, making it the longest song on the album. When performed live throughout the 70s, it was even slightly longer, though in later tours, as evidenced in bootlegs and the releases P•U•L•S•E and Delicate Sound of Thunder, it was sometimes up to a minute shorter.

"Us and Them" is rather quiet in tone and dynamics. It has two saxophone solos in it, one at the beginning and another towards the end of the song. Richard Wright introduces the song with harmonies on his Hammond organ, and put a piano chordal backing and short piano solo afterwards on the arrangement. The tune was originally written on the piano by Richard Wright for the movie Zabriskie Point in 1969; this is where the "Violent Sequence" title came from. Director Michelangelo Antonioni rejected it on the grounds that it was too unlike their "Careful with That Axe, Eugene"-esque work, which was the style of music he wanted to use. As Waters recalls it in impersonation, Antonioni's response was, "It's beautiful, but is it too sad, you know? It makes me think of church." The song was shelved until Dark Side of the Moon where Waters put some vocals in to it.
The verses have a unique, jazz-influenced chord progression: Dsus2, D6(add9), D minor major 7,(or Faug/D) and G (with D in the bass, sustained as a pedal point throughout). The D6 with an added 9th is not unlike an Esus2 with a D in the bass, but because the bass line also provides the fifth, it is more accurately described as a kind of D chord. The D minor chord with a major seventh is a rarity in 1970s rock music.
In the middle, there is a break during which roadie "Roger the Hat" speaks (during the recording of the album a number of interviews were laid down, including with Paul and Linda McCartney who were recording in the same studio). Before its release, the song was known as "The Violent Sequence" which is available on bootlegs.

LYRICS:
Us and Them
(Waters, Wright) 7:40

Us, and them
And after all we're only ordinary men.
Me, and you.
God only knows it's noz what we would choose to do.
Forward he cried from the rear
and the front rank died.
And the general sat and the lines on the map
moved from side to side.
Black and blue
And who knows which is which and who is who.
Up and down.
But in the end it's only round and round.
Haven't you heard it's a battle of words
The poster bearer cried.
Listen son, said the man with the gun
There's room for you inside.

"I mean, they're not gunna kill ya, so if you give 'em a quick short,
sharp, shock, they won't do it again. Dig it? I mean he get off
lightly, 'cos I would've given him a thrashing - I only hit him once!
It was only a difference of opinion, but really...I mean good manners
don't cost nothing do they, eh?"

Down and out
It can't be helped but there's a lot of it about.
With, without.
And who'll deny it's what the fighting's all about?
Out of the way, it's a busy day
I've got things on my mind.
For the want of the price of tea and a slice
The old man died. (less info)