Last words from forgotten voices (5)
I believe the answer is:
envoi
'last words' is the definition.
(I've seen this before)
'from forgotten voices' is the wordplay.
'from' indicates a hidden word.
'ENVOI' is hidden in the letters of 'forgotten voices'.
(Other definitions for envoi that I've seen before include "Last part of poem" , "Second Hebrew letter" , "Brief stanza concluding a poem" , "Short concluding stanza" , "Poetic conclusion to book" .)