Kirill Petrenko presents two key works of the 20th century: with Kammersymphonie Nr. 1, Arnold Schoenberg initiated a turning point in his oeuvre, away from the full sound of late Romanticism and towards a modern, sinewy musical language. The expressive power that this can generate is also shown in his unfinished oratorio Die Jakobsleiter, for which Schoenberg was inspired by an Old Testament story: Jacob’s dream of the ladder to heaven that leads to God is taken by the composer as a parable for man’s search for spirituality.