Johannes Silberschneider as Gustav Mahler

Barbara Romaner as Alma Mahler

Karl Markovics as Sigmund Freud

Friedrich Mücke as Walter Gropius

Eva Mattes as Anna Sofie Schindler-Moll

Karl Fischer as Carl Moll

Lena Stolze as Justine Mahler-Rosé

Michael Dangl as Bruno Walter

Max Mayer as Max Burckhard

Johanna Orsini-Rosenberg as Berta Zuckerkandl

Michael Rotschopf as Alfred Roller

Nina Berten as Anna von Mildenburg

Matthias Stein as Alexander von Zemlinsky

Manuel Witting as Gustav Klimt