Create a new rule entitled “Cacophony” with the following text:

The Cacophony Index (CI) is a real number calculated as (the number of Musicians with Dissonant Harmony - the number of Musicians with Consonant Harmony) / the total number of Musicians. If at any time the Cacophony Index is greater than 0.5 the Conductor may declare an end to the music by making a post to that effect. This shall have the effect of setting all Style columns for all Musicians to “-”.

For example, right now the CI is (9-2)/16 = 0.4375. A CI of 0.5 corresponds to 75% of the players having dissonant harmony and the rest having consonant harmony, or half of the players having dissonant harmony and none of the rest having eir harmony set, or some situation in between.