Portal 2 Turret Opera

I just finished Portal 2 today - wonderful game - and I loved the Turret opera at the end almost more than the end credit song. I can’t find the OST and do not know the piece, but at least I can upload it for now for those who want to listen to it like I do. I apologize for the video being a bit dark, its my video compressor. This was more for the music anyway, though. Everything in this video is the property of Valve software. My dear, beautiful darling. My child that I admire. To my dear, farewell!