Wiesbadener Knabenchor
... that the boys choir Wiesbadener Knabenchor has performed as an "ambassador" of Wiesbaden, Germany, including in Bulgaria and Australia?
... that the boys choir <b id="mwBXI"><a href="./Wiesbadener_Knabenchor" id="mwBXM" rel="mw:WikiLink" title="Wiesbadener Knabenchor">Wiesbadener Knabenchor</a></b> has performed as an "ambassador" of <a href="./Wiesbaden" id="mwBXQ" rel="mw:WikiLink" title="Wiesbaden">Wiesbaden</a>, Germany, including in Bulgaria and Australia?