Kronos Quartet - Lux Aeterna

I'd heard of Kronos Quartet but never really paid them much heed until I'd seen Requiem For A Dream. The recurring theme Lux Aeterna is ultra familiar now but when I first heard it my mind was blown. I remember looking at the OST in HMV, it cost about 20 pound sterling and I didn't buy it until a flatmate mentioned he might get it, I sprung the cash and it was mine. Even after multiple adverts and trailers this piece remains very evocative. I've since become a huge fan of Kronos and the composer Clint Mansell.