Okay, TMB. Now I understand, LOL

Are you doing staple frets?

That's so funny a coincidence- I was watching that Stephen Seifert video again just yesterday!  TMB's are traditional and powerful boxes.  It'll be interesting to see your personal take on it, Mark.

It is going to be modelled off of a TN Music Box. But I do not do corners, so when the musician who commissioned it contacted me we had to figure out how to be authentic to my way of building and aesthetics and the TN Music Box. But I love these kind of engineering and build challenges. 

There is a long history of these instruments, and even though they range in look and build depending on the builder.

Tn Music Box video 

"Over 100 years ago, farming communities in middle Tennessee produced a folk instrument unique to the area. Similar to a dulcimer, the instrument — called a Tennessee music box — had a crude appearance but a rich, full tone." http://www.npr.org/templates/story/story.php?storyId=4469269

So it is coming out of a specific history, but I'm twisting it to my way of building and playing. But I'm modifying the fretboard for the musician--this is an innovation I've not seen on fretboards, so I'm excited about this. I'll also decorate the box and hide the soundholes. And there will be a peghead and tailblock on mine so that modern players (Others may want one!) who love to strap on an instrument and play can easily do so.

I hope this answers your question, and big smiles to you!

Is that going to be sort of a historical instrument, like a "sheitholt" ?