On March 20. 1212 the German Emperor Otto IV declared the foundation of the German boys choir, The Thomanerchor.
Today they sing regularely in the Thomaskirche, Leipzig.
Famous Germans have over centuries been a member of the choir, among them:
Carl Philipp Emanuel Bach (second son of Johann Sebastian Bach)
http://en.wikipedia.org/wiki/Carl_Philipp_Emanuel_Bach
Sebastian Krumbiegel, Tobias Künzel, Wolfgang Lenk, Henri Schmidt (Singer and members in the German band Die Prinzen)
http://en.wikipedia.org/wiki/Die_Prinzen
Die Prinzen with Millionär (Wannabe Millionair):
http://www.youtube.com/watch?v=VAKVsHjmKY4