It has many characteristics of Felix Titling, but it's not...

Maybe beautiful and light SangBleu?
http://www.fontshop.com/fonts/singles/bp_type_foundry/sangbleu_bp_serif_...

My lightest are Bodoni Egyptian Thin and Beaufort Light.

Old school, it's Light Classic Roman

I wrote about thin fonts nine years ago, Seeing the Light; since then, a great many more have been published. This is a golden age, but it's impossible to keep up with everything unless you're Stewf or crowdsourcing :-)

Thank you all very much for your responses!
I really appreciate it!

http://typophile.com/node/69648