Hängerbänd is a local band from Rhein-Main-Area in Germany, playing Motörhead styled music. http://www.haengerbaend.de/
Those two patches on the back are in second edition limited to 10 pieces each.
Johnny And The Bazookas is an unplugged rock cover band from a friend of mine.
The beercap says "Gude", a local greeting and the name of a local beer.
Yeah well, and the Stormtrooper and Anti-Social Patch speak for themselves.