Heinz Robert Holliger is a Swiss composer, virtuoso oboist, and conductor. Celebrated for his versatility and technique, Holliger is among the most prominent oboists of his generation. His repertoire includes Baroque and Classical pieces, but he has regularly engaged in lesser known pieces of Romantic music, as well as his own compositions. He often performed contemporary works with his wife, the harpist Ursula Holliger. Many composers have written works for him, including Messiaen, Berio, Carter, Henze, Krenek, Lutosławski, Martin, Penderecki, Stockhausen and Yun. A noted composer himself, Hollinger has written works such as the opera Schneewittchen.