Maske in Blau (Mask in Blue) is a grand operetta in two parts (six scenes) with music by Fred Raymond to a libretto by Heinz Hentschke and Günther Schwenn.
Rachel Blau DuPlessis | Henry Maske | Eric Blau | Peter Blau | Theodore H. Blau | SV Blau Weiss Berlin | SpVgg Blau-Weiß 1890 Berlin | Herbert Blau | Amram Blau |