Ruth-Margret Pütz
... that Ruth-Margret Pütz was considered one of the leading coloratura sopranos of the 1960s?
... that <b id="mwA44"><a href="./Ruth-Margret_Pütz" id="mwA48" rel="mw:WikiLink" title="Ruth-Margret Pütz">Ruth-Margret Pütz</a></b> was considered one of the leading <a href="./Coloratura_soprano" id="mwA5A" rel="mw:WikiLink" title="Coloratura soprano">coloratura sopranos</a> of the 1960s?