Addenda to Robbie's comments:  Liriodendron tulipifera (Tulip poplar)
was and is used as a core or base wood for many furniture items.  It
was used for music boxes for structural integrity, non-warping and
easily colored, as mentioned previously.  My forester father grew
that tree and we harvested them during the 1950's, in southern Indiana.
I literally grew up with that tree.  Tulip poplar is the Indiana state
tree.

My George Benden six-cylinder music box, finished with Carpathian
(Birdseye) elm and inlays, has poplar for the core.  The box was made
in the middle 1870s.  Poplar wood also used on my 1905 Regina disc
serpentine case.

Regards from cool Lake Tahoe, Calif.
Ray Bauer