The statement noted that van Kampen died on Mark Rylances 65th birthday.

Van Kampen was an accomplished musicologist, and her compositions graced many theatrical productions in London and onBroadway.

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Van Kampen wrote the playFarinelli and the Kingand its baroque music.

Mark Rylance and Claire van Kampen pose on a red carpet.

Mark Rylance and Claire van Kampen attend the 72nd Tony Awards on June 10, 2018 in New York City.Dimitrios Kambouris/Getty Images for Tony Awards Productions

Stevens mentoring me on the script, van Kampen had said.

Van Kampen was named the first female composer for both the Royal Shakespeare Company and the National Theatre.

She always said that she was at her happiest when studying ancient sheet music.

‘Good Night, and Good Luck’ on Broadway

Heres the statement signed by Mark and Juliet Rylance.

Claire has died of cancer on Mark Rylances 65th Birthday.

We thank her for imbuing our lives with her magic, music, laughter, and love.

Ring the bell, sound the trumpets reverie, something is done, something is beginning.

One of the great wise ones has passed.