So after a little research I believe that it is a TA or asiapet lily. If you'll notice on some of the pics, although it is completely upright, it has a definite cup shape and the anthers are intermediate between a trumpet and asiatic. The style/stigma is also a little beefier as well. The foliage is also longer like a trumpet.




I've also included a picture of Black Charm to show the difference in a definite asiatic. Note the difference in flower shape and leaves.

Leaves would not be a good thing to go by, as there is incredible variation within the asiatic group. A large portion do have wider, shiny, and lighter green leaves, however. This is mostly due to the heavy use of Lilium maculatum ancestry.
Lilium maculatum:


But on the other extreme is Lilium davidii, also used in breeding to a lesser extent.
Lilium davidii"

I agree Rick but you have to admit that the arrangement is trumpet esque.

Yes, especially how the petals are held and curved, and the beefier sex parts.