GarageBand Ping-Pong is an experiment in collaborative musical composition involving two players and (somewhat obviously) GarageBand. In the following rules, players are referred to as Player A and Player B. Intellectual rights to the song in play shall mutually vest in both players, except as indicated under Rule 7.
OFFICIAL RULES
Rule 1. Player A is selected by some random means and is designated to go first.
Rule 2. Player A initiates the game by creating a GarageBand song containing one track. The initial track can be of any form (i.e., recorded music, MIDI, etc.)
Rule 3. Once the initial track is created, the Garageband file (and any associated assets) are packaged securely and transmitted to Player B.
Rule 4. Player B creates a new track in the file and returns it to player A.
Rule 5. At any point after the song contains at least four tracks, a player, at his or her discretion, may choose to either extend a previously-submitted track or add a new track.
Rule 6. In addition to creating a new track or extending a previously-submitted track, a player may alter or delete a track submitted at least three turns previously. For example, Player A creates track 1; B creates track 2; A creates track 3; B creates track 4. At this point, Player A can either extend any existing track or add a new track; in addition, player A could alter or delete Track 1, since it was created more than three turns previously.
Rule 7. The game ends when a player says “Ok, I’m done” and returns the file to the other player without making any changes. The remaining player has the option to make one last change, or can let it stand. Failure to return changes to the opposing player within 5 days of receipt of the song is considered the same as saying “Ok, I’m done”. A play who fails to respond within 5 days will, in addition, lose all intellectual property rights in the song.
Rule 8. The game will also end if any of the following conditions are met: (a) the song is adopted as the theme of a television sitcom; (b) the song is nominated for a Grammy or Dove award; (c) the song is intercepted by an evil outsider, who uses it to encode instructions for a secret terrorist cell; (d) on any other condition mutually agreed-upon by both players.