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Download and Play Eternal Music

Aperture was written by Chris Brown in 2002

Arrange modulated tones.

Download this executable JAR file: EternalMusic_20200617.jar


  1. Download the JAR file above.
  2. Locate the file on your computer then Right-click or Control-click the JAR file and select Open. The first time you run it you will get a warning that the app is not signed. That is normal.
  3. Click the Open button.
  4. If you cannot open the JAR file then you will need to install Java from Oracle. Learn more... Then try again to open it.
  5. (After you run it the first time, you can run it again just by double clicking the JAR file.)
  6. Enter your name or a nickname. Hit Login button...
  7. Create a new room, or enter an existing room if available...
  8. You are now running the piece and can interact with anyone else who logs into that room.

How to Play

  • Click down in the "Eternal" window and drag the mouse; notice how the X-Y position of the mouse chooses the two pitches that alternate as part of your "voice".
  • Move the mouse at different speeds without dragging it (not clicking down first); notice how the speed and position of the mouse affect the modulations applied to your voice. ..
  • You will know other players are playing when their circles move, and you will also hear their voice changing...
  • If there are less than four players playing, you can hit the 'n' key to switch to the next voice; you should use this together with the other players to tune the four voices into chords...
  • Hit the space bar to toggle a voice on or off. The circle displays as transparent, and its sound stops...
  • Listen for different harmonies created by all four voices; you don't have to move alot to enjoy the sound of this piece; try it in the background while you do other work on the computer (it will continue running while you open other windows or applications), and visit it occassionally to retune the frequencies gradually !..

For historical interest, visit the original non-working Applet

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