Each Epeisondion is framed by a Stasima, a part sung by the choros. The choros in ancient tragedy represented the people. In Oudeis the choros will represent the audience who follow the play on computer screens.

Sounds of voices singing 'a capella' in Greek, composed by an international group round Santiago Pereson, will be produced by instructions sent by the virtual audience during the play. Two loudspeakers will reproduce this sound on the stage. This sum of voices will build up the chorus, each voice being 'triggered' by someone over the net. Most of these voices will be processed to have a 'realAudio' sound, the sound format most used in the net. There are some drafts finished already.

Interaction
In oudeis, any spectator may send a sound to the stages, collaborating in this way with the actors, adding meaning. This interaction will also be visible for all spectators - the active ones and the ones who are only watching.
It will be made by a sort of 'score', made up of dots on a two-dimensional 'canvas'. This can then be 'played' by the computer that deals with the choros. x would be time (seconds, beats or measures) and y would be a sound choice.

	1	2	3	4	5	6	7
1	0	-	0	-	-	-	-
2	-	0	-	-	0	0	-
3	0	-	0	0	0	-	-
4	-	0	-	-	-	0	-
5	0	-	-	0	0	-	-
6	-	-	0	-	-	0	-
7	-	-	-	-	0	-	0

The number of 'dots' that are drawn will keep updating during the episodes on a screen behind the stage, visible for the other audience members. Then, in the Stasima (between two Epeisodions) the picture would 'freeze' - and be played.