Text from Gamma rays official website:
Dear Fans, as you might remember last year we had a live streaming show to celebrate the 30th anniversary of GammaRay. First we thought we could do some more real live shows with the special guests – Ralf Scheepers and Corvin Bahn – by the beginning of 2021. It’s still not possible to play live shows unfortunately and at the moment nobody knows when we can do a tour again. So we decided to make a Double Live CD of this show in the ISS Dome. This extraordinary event in Düsseldorf on the 27th of August last year was recorded without an audience.