Hey, I'm wondering if anybody can make sense of something in this review: http://www.moviemusicuk.us/choruscd.htm

As you can see Simons says that Coulais owes "a bit to Mozart’s Requiem and perhaps even a little to John Williams’ Schindler List" for his piece In Memoriam that features extensively in Barratier's Les Choristes. I've examined all three of these scores and am still unsure as to what you he was referring to.
Here's some youtube links to the songs/music if this would help

http://www.youtube.com/watch?v=Go-N9yZUtKc In Memoriam - Bruno Coulais (Youtube)

http://www.youtube.com/watch?v=d88xIIRDI9U Mozart's Requiem Mass in D minor (1st movement)

http://g.sheetmusicplus.com/Look-Inside/large/6375137_01.jpg Fisrt Page of Score for In Memoriam!

http://imslp.info/files/imglnks/usimg/e/ea/IMSLP30150-PMLP02751-Mozart-K626FSeul.pdf IMSLP Complete score for Mozart's Requiem