Question: The woman who played the mother of Holocaust diarist Anne Frank in a movie is the daughter of which famous composer?

Context paragraphs:
Tatjana Blacher: Tatjana Blacher (born 18 May 1956 in Berlin) is a German actress.  She is the daughter of composer Boris Blacher and pianist Gerty Blacher-Herzog.  Blacher studied at the Max Reinhardt seminar and at the Lee Strasberg Theatre and Film Institute.  She is mostly known for her role as Edith Frank in "".  She has been on many TV shows and has a son named Josh.  She is multi-talented.  She has had professional training in singing and dancing.  She comes from Berlin, Germany and speaks fluent German as well as English.  She had started her career in 1997 in her debut movie called "Reise in die Dunkelheit".

Laatste Zeven Maanden van Anne Frank: Laatste Zeven Maanden van Anne Frank (English title: "The Last Seven Months of Anne Frank") is a 1988 Dutch television documentary directed by Willy Lindwer about the last seven months in the life of diarist Anne Frank.  Seven different women, who were fellow prisoners of Anne Frank in the Westerbork transit camp, and the Auschwitz and Bergen-Belsen concentration camps, gave interviews about Anne's last months in this documentary.  Among them are Hanneli Goslar, Anne's childhood friend and fellow prisoner in Bergen-Belsen, and Janny Brandes-Brilleslijper, Anne's fellow prisoner in all three camps.  Both women, who were cell mates with Anne and Anne's sister Margot, are believed to be among the last known people to have seen Anne alive.

Anne Frank Remembered: Anne Frank Remembered is a 1995 documentary film by Jon Blair about the life of the diarist Anne Frank.  The documentary was made in association with Anne Frank House, Walt Disney Pictures and the British Broadcasting Corporation.  It was originally screened as a TV documentary, but was later given a theatrical release by Sony Pictures.

Edith Frank: Edith Frank (née Holländer; 16 January 1900 – 6 January 1945) was the mother of Holocaust diarist Anne Frank, the daughter-in-law of Alice Betty (nee Stern) Frank and Michael Frank, the sister-in-law of Robert, Herbert, and Helene Frank.  She died from starvation at the age of 44, ten days before her 45th birthday.

Hanneli Goslar: Hannah 'Hanneli' Elizabeth Goslar (born November 12, 1928) is a former nurse who is best known for her strong and close friendship with diarist Anne Frank.  Both Hannah and Anne had attended the Sixth Public Montessori School (now the Anne Frank School) in Amsterdam and then the Jewish Lyceum.

Anne Frank: The Biography: Anne Frank: The Biography is the first full biography of Holocaust diarist Anne Frank.  Written by Melissa Müller it was initially published in 1998 in Germany.  The book was the basis for the mini-series "" (2001).

Das Tagebuch der Anne Frank: Das Tagebuch der Anne Frank ("Anne Frank's diary") is a 2016 film directed by German Hans Steinbichler.  It tells the story of Anne Frank, the Jewish girl who went into hiding with her family in Amsterdam and became a victim of the Holocaust.  The film is based on Anne Frank's famous diary.  The world premiere was held at February, 16 in a special presentation for young people during the 66th Berlin International Film Festival.  It was listed as one of eight films that could be the German submission for the Best Foreign Language Film at the 89th Academy Awards, but it was not selected.

Anne Frank House: The Anne Frank House (Dutch: "Anne Frank Huis" ) is a writer's house and biographical museum dedicated to Jewish wartime diarist Anne Frank.  The building is located on a canal called the Prinsengracht, close to the Westerkerk, in central Amsterdam in the Netherlands.

The Short Life of Anne Frank: The Short Life of Anne Frank (Dutch: "Het Korte Leven van Anne Frank" ) is a 2001 Dutch television documentary film about the life of diarist Anne Frank.  It was directed by Gerrit Netten.  The film was narrated by several actors, including Jeremy Irons, Joachim Krol, and Bram Bart.  Thekla Reuten and Nicky Mark Morris provided voices for Anne Frank.  The film includes the only known footage of Anne Frank (taken in 1941), a video of Otto Frank in English (taken in the 1960s), and some pages from the original diary of Anne Frank are also videoed in the film.

Sanne Ledermann: Susanne "Sanne" Ledermann (October 7, 1928 – November 19, 1943) was a German Jewish girl who was killed by the Nazis in the Auschwitz concentration camp.  Susanne is best known for her friendship with the famous diarist Anne Frank and her sister Margot Frank.

Supporting paragraphs: Tatjana Blacher Edith Frank
Answer: Boris Blacher