The Vienna Boys Choir is one of the most famous choirs in the world. For six centuries, this illustrious group of child musicians has been delighting music lovers with their purity of tone, distinctive charm and diverse repertoire that includes everything from medieval to contemporary to experimental music. Led by president and artistic director Professor Gerald Wirth, the Vienna Boys Choir is divided into four choirs and between them the choirs give around 300 concerts each year, attended by almost half a million spectators across the globe. Since 1924, 2,750 choristers have sung more than 1,000 tours in 100 different countries, and its singing tradition has been listed by UNESCO as intangible cultural heritage in Austria.