Thomas Quasthoff at the Verbier Festival Academy : songs and arias / - Mozart, Wolfgang Amadeus,; Schubert, Franz,; Mozart, Wolfgang Amadeus,; Schubert, Franz,; Wagner, Richard,; Quasthoff, Thomas.; Lepper, Simon; Sabatier, Pauline,; Kim, Seil,; Eminova, Yana,; Szlakmann, Sarah,; Mills, Courtney,; et al. (The Masterclass Media Foundation,, 2007)