The Vienna Boys Choir, known for its polished artistry, robust sound, and ebullient charm, is probably the most famous boys’ choir in the world, and likely the most visible. The 90–100 active choristers are divided into four touring choirs: Over the last century, the boys have undertaken more than 1,000 tours in over 100 different countries, clocking up a staggering 29,000 concerts. Between them, the choirs sing almost 300 concerts per year, reaching half a million people around the world live.