This is a ~7.5" long bracelet with the design of a standard piano or keyboard. The black keys are a heavy raster. There are holes in each key to thread the bracelet together using twine, elastic, or whatever you like! Also you can shorten the bracelet if necessary by simply omitting some of the pieces.
EDIT: Just got the parts in, the heavy raster didn't work on the black keys (they just came out white like the rest) but I just gave them a light coat of black spray paint and voila!
Just FYI for anyone interested.