By its very nature as a collective and oral work, the operetta-revue Le Verfügbar aux Enfers poses many challenges for musical restoration and performance. This article examines these challenges, the first of which questions whether we should reproduce what the Ravensbrück deportees could actually have done with the means they had within the camp, or whether we should try to reconstruct and reinterpret the work according to their intentions. The article suggests some answers to these questions, and proposes an original reconstruction of an air from Le Verfügbar aux Enfers based on a duet from the operetta Ciboulette (1923) by Reynaldo Hahn (1874-1947).