4'33": a question of time

1) Prepare a microphone or a recording device (preferably something stereo) on your desk.

2) Start recording.

3) Open a window.

4) Listen for 4 minutes 33 seconds.  Don't add anything!

5) Close the window.

6) Stop recording and send the soundfile to 'jurgen [at] aifoon [dot] org' (thru yousendit, or dropbox or whatever...)
7) Oh, and mention where it was recorded...

Feel free to submit your version!