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.
My questions:
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!