Comedian Harmonists
...that the Comedian Harmonists was one of the most successful 20th century musical groups in Europe before World War II?
...that the <b id="mwoA"><a href="./Comedian_Harmonists" id="mwoQ" rel="mw:WikiLink" title="Comedian Harmonists">Comedian Harmonists</a></b> was one of the most successful <a href="./20th_century" id="mwog" rel="mw:WikiLink" title="20th century">20th century</a> musical groups in <a href="./Europe" id="mwow" rel="mw:WikiLink" title="Europe">Europe</a> before <a href="./World_War_II" id="mwpA" rel="mw:WikiLink" title="World War II">World War II</a>?