The Vienna Boys Choir is a modern-day descendent of a Viennese boys choir (Wiener Sängerknaben in German) that dates back to 1498. The group, which has collaborated with renowned musicians – including Wolfgang Amadeus Mozart, Franz Schubert, and Hans Richter – performs a colorful repertoire that encompasses music from the medieval to contemporary and experimental. The boys “sang with sensitive balance and phrasing,” hailed The Washington Post.