What occurred to me, that some years ago, there was a movie about a women's
prison camp in Indonesia (I believe) during Japanese occupation.  Because
there were some musicians, but no instruments, the women started to 'sing'
famous movements of instrumental music, and I don't know if this piece was
also sung (but of course, there's a large probability) A soundtrack CD was
released, as I thought from a Dutch choir from Haarlem (at the time, I
worked there).  I have neither seen the movie nor heard the soundtrack, but
will look further into it.  I thought it starred someone like Meryl Streep
or Isabella Rosselini in the movie.

Regards,

Pieter Bijlsma

 [I believe Pieter is referring to the 1997 movie Paradise Road starring
 Glenn Close, Frances McDormand, and Cate Blanchett among others.  It
 the story of a group of women captured in Singapore by the Japanese
 during WWII and held in a concentration camp.  Close's character, a
 graduate of Royal Academy of Music, organizes a voice orchestra using
 scores written from memory.  The film had original music by Ross Edwards.
 I have not yet seen this movie.  -Dave]