I recently sang, and separately listened to a performance of Duruflé's requiem. While listening, I was struck by the last chord of the in Paradisum, which adds an unexpected note half way through (and even wondered if Duruflé was hinting at an afterlife).
I don't have the score, but located a YouTube video that has a reduced score accompanying a recorded performance. I think the final chord is a dominant 7th in B major (notes F#, A#, C#, E), which gets supplemented by a G# on the last three beats of the piece. I think it is the G# that is particularly interesting.
1) Is this anything unusual? or is this just typical for the era in which the music was written?
2) If there is something unusual here, has it been commented upon previously; has it been interpreted somewhere?
Thanks for any info!