Not a BinG! event, but nevertheless highly recommended: Ringmasters and Hör Bänd, young talent comedy a-cappella band from Hannover, will perform at the Humboldtsaal Freiburg on January 23, 2018. The concert was organized by Jazzchor Freiburg and materialized at a really short notice. Of course, Barbershoppers and everybody interested in a-cappella music are very welcome, particularly from the southwest.
Tickets are available at https://www.reservix.de/tickets-a-cappella-pur-akustisch-ohne-mikros-in-freiburg-im-breisgau-humboldtsaal-am-23-1-2018/e1129116