"The soprano Ulrike Sonntag, who recently gave a guest performance at the Vienna State Opera, has approached the Lieder with remarkable involvement. A beautiful, vivid voice, unforced and without false allure; and Gisela Andreas is a perfect, multi-coloured partner at the piano. [...] The fact that the whole thing was recorded with a prototype sphere-microphone makes the brilliance more obvious: this is a concert hall atmosphere. A thoroughly convincing musical and lyrical presentation." (Baseler Zeitung)