Furnished content.
(from Lumberjocks.com)
Remember the song from “The Who – Squeeze box?” This ain't like that. I was browsing the antiques on craigslist and saw a little accordion humidor. It got me thinking.It took about 10 weeks from idea to finished project. The 1st few days were just wondering if I could do it, a few more to figure out how, set dimensions and come up with a plan. That changed along the way. I built a mockup in bb ply to check proportions, and later another in MDF to check joinery. That's something I'm doing more and helps me make decisions. I can make mistakes in plywood and MDF and hopefully not the finished project. Hopefully.I only got to buy 1 new tool for this, a 45 degree chamfer router bit. 
I did make a total of 13 jigs, jig attachments, templates, glueup forms, tall drill press fence, router table fence inserts and a small parts crosscut sled.I don't know what all the woods are that I used. The white wood is Aspen, the brown wood is I think wenge, and my guess on the red wood is ribbon mahogany. That red wood is harder than Chinese arithmetic, and easily burns on the tablesaw and router table. If you know what they are I'm all ears. The black keys are something else I don't know.
The bottom of the top box is the top of the middle box, and the bottom of the middle box is the top of the bottom box. That made me think of that old Paul Simon song.It has cute little feet.
The top box is the smallest inside, but still big enough. The bottom is attached with rare earth magnets. A secret compartment.
Brass spiral nails are glued in and predrilled to reinforce the miter joints.The box is 5” wide x 5” tall x 8” long. The keyboard brings it up to 8” tall.Minwax Aerosol Lacquer Semi – Gloss