Quartet For The End Of Time, by Messiaen

Wiki tells us
After the fall of Francein 1940, Messiaen was interned for nine months in the German prisoner of war camp Stalag VIII-A, where he composed his Quatuor pour la fin du temps (“Quartet for the end of time”) for the four instruments available in the prison—piano, violin, cello and clarinet. The piece was first performed by Messiaen and fellow prisoners for an audience of inmates and prison guards.

Olivier Messiaen – Trois Petites Liturgies