The total slot for performing including time for entrance on and exit of stage is 30 minutes.
Each choir introduces itself by a 60 second video projected, on a screen above the stage while possibly positioning on stage (exceptKleiner Konzertsaal, there the screen covers the stage).
Details of video data and uploading will be communicated.
The 30 minutes slot can’t be extended.
Otherwise we are forced to advice the choirmaster to stop the performance.