Stacy Kent is a favorite. With a glass of wine and the lights down, you'd swear she's in the room playing a private concert for you. I've always liked Dianna Krall though to. But...I have this one recording of an opera singer who solos and then a backup choir comes in and every time I hear it I get massive goosebumps and my eyes water. It's the Toby Church Chamber Choir singing Marias Vaggsang. I don't know what they are singing, but it's amazing.