"Just be aware that either Classic or TI is a little too free with that label. I've got three different 'singing' TI's and none of them are anywhere near thin enough to sing. All of my truly singing blades are of different makes."

I am assuming that it's the grind on these that make them 'singing' and that that will influence the shave in some way. Correct? I'm not familiar with Classic or TI but read that TI makes a 'singing' one - very pronounced thinness to the blade that makes this grind preferable for heavy beards. I've seen razors in shops but they don't say what grind they are, let alone singing or not, and personell are usually not that knowledgable in the details of grind etc. Maybe by looking at 2 or 3 side by side I'd be able to tell the difference Susuki is speaking about.
Regards,
Zig