The Armed Man: A Mass for Peace
https://www.learnchoralmusic.co.uk/Jenkins/Armed-Man/armed-man.html
Also look on Youtube for Mathias Charton - he has made rehearsal helps for all parts
Eternal Light, A Requiem (We are singing movements 4, 5, 9, 10)
https://www.learnchoralmusic.co.uk/Goodall/Eternal-Light/eternal-light.html