Heinz Robert Holliger (born 21 May 1939) is a Swiss virtuoso oboist, composer 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; composers such as Berio, Carter, Henze, Krenek, Lutosławski, Martin, Penderecki, Stockhausen and Yun have written works for him. Holliger is a noted composer himself, writing works such as the opera Schneewittchen (1998).