I had to learn this piece in piano class. It is one of 6 pieces written by Arnold Schoenberg that make up his Opus 19. Below is a link with much interesting information about the composer and these pieces.
http://en.wikipedia.org/wiki/Sechs_kleine_Klavierst%C3%BCcke
And the above link includes a mid file of all 6 pieces.
I rendered two version of #2 of 6 called Langsam (Slow)
It is quite minimalistic.
Rendered as a piano piece
http://clones.soonlabel.com/public/classical-music/schoenberg-op19-piano.ogg
and as an ensemble of celesta, marimba, french horns and trombones.
http://clones.soonlabel.com/public/classical-music/schoenberg-op19-ensemble.ogg
Here is a PDF of the piece - beware that Sonar mangles the accidentals and expression is not visible. But its good enough to follow.
I toyed with a synthesizer rendition... possible but I found nothing that struck me as much as the ensemble version.