Christanne de Bruijn as Antonia Brico / Willy Wolters

Benjamin Wainwright as Frank Thomsen

Scott Turner Schofield as Robin Jones

Seumas F. Sargent as Mark Goldsmith

Annet Malherbe as Mother Antonia

Raymond Thiry as Father Antonia

Gijs Scholten van Aschat as Willem Mengelberg

Richard Sammel as Karl Muck

Sian Thomas as Mother Frank

Tim Ahern as Father Frank

Sara Visser as Emma

James Sobol Kelly as Director Barnes

Anja Antonowicz as Miss Goldsmith

Peter Basham as Concertmaster

Nastassia Firestone as Marjorie

Loes Schnepper as Nun

Judith van der Werff as Hairdresser

Ronald Armbrust as Tailer

Céline Purcell as Frau Mayer

Marie-Claire Witlox as Female Musician

Kok-Hwa Lie as Butler

Annemarie Feltmann as Housekeeper Muck

Boris Saran as Bankemployee