Lilies: Would someone please tell me about this lily, 1 by MullettMan

MullettMan wrote:
I believe it's a lily anyway.

I moved into this new house not quite a year ago and some new plants keep emerging as the seasons progress. This is the first time these have flowered for me and I'd love to know what they are. If there's any special attention this cultivar might need I'd love to know. I'm brand spankin new to lilies and have never had one before. This new house has about 5 clumps like the one here.

Once I figure out what these are I can refer to my gardening books and see what makes them tick. As I've said, I know 'squat' about lilies.

Thank you for any and all help you might provide.
By the way, I live in zone 7, Charlotte, NC. if that will help you figure out what these may be.