I was perusing rasage poulin earlier and I noticed that they label some of their T.I.'s as singing, but in the pictures of said razors the blades say "fully hollow ground." I was under the impression that a singing blade was "hollower" than a full hollow. Is this true? And can anyone tell me if these are indeed singing. And if not where can I find a singing blade? I really dig the full hollows and really want to try a singing blade.

Thanks

Ty