Jonas wrote:

The biggest Yello event was in Dortmund 14 years ago, 
in front of 20,000 people......... 

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Are you talking about Mayday? Yello was one of many guests at that event.

Mayday was not a Yello produced event.

This Berlin Virtual concert is a Yello produced event and the biggest in history. The most publicized and probably the most expensive. 

I would also guess its the first Yello produced event to have tickets sold to the public world wide. THIS IS BIG!