That said, I have Sourced some recent info that appears to indicate Libera will be involved with World Youth Day events in Krakow (Poland) and will then make their concert debut in Germany on 2nd August at Pilgerkirche (Pilgrim Church), Vallendar-Schönstatt, http://www.schoenstatt.de/de/news/3226/ ... nstatt.htm
https://www.google.be/maps/place/Pilger ... d7.6290945
According to Wikipedia...
"The pilgrim Church is a Roman Catholic Church in Schoenstatt , a district of Vallendar in the district of Mayen-Koblenz in Rhineland-Palatinate . She is the patron saint of Mother Thrice Admirable consecrated and serves as a sanctuary for coming to Schoenstatt pilgrims and the communities of the Schoenstatt Movement"
"The church is a round church built with 50 m diameter in tent shape and has about 1350 single seating in seats"
YouTube Video demonstrates the acoustics...
A little more info on the venue here http://schoenstatt-info.com/wallfahrt-s ... kirche.htm
I also note...
...so let's hope they manage to raise enough funds to break even and take away any financial worries.The entrance fees are for the cost of the concert and the accommodation of the choir. The door collection provides financial support of Libera
Apart from the mention in the article above, I can't find much info about their involvement in Krakow for WYD but there are a series of events they could be part of. It may also involve Mark McKenzie and his work on the animated film 'Max & Me'.