Gustav Schäfer performing at a festival in Hessisch-Lichtenau, Germany. 2006 by Pascal Parvex, <a rel="nofollow" class="external free" href="http://www.parvexfilm.com">http://www.parvexfilm.com</a> (released into GFDL: <a class="external text" href="https://commons.wikimedia.org/w/index.php?title=User_talk%3APascal_Parvex&amp;diff=5709619&amp;oldid=5701853">info</a>)
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Pascal_Parvex" title="User:Pascal Parvex">Pascal Parvex</a> assumed (based on copyright claims).
CC BY 2.5
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