The concert starts at 8pm, at the Motorcross place just south of Reutlingen. It's near the soccer stadium, and you'd follow the soccer stadium signs and park in P4 if coming by car, or else the bus runs right by it. Bus stop: Haltestelle Roßwasen. You'd take the bus from Reutlingen in the direction of the town of Gönningen.
They sing in German and English. For samples of their music, you can visit their web site where they have short sound clips from two of their albums available, as well as lots of silly photos.