[mchan889]

This looks cool, however can someone with some electronics know-how explain to me why the connections on most, if not all the keys are crossed? They don't look like insulated wires, though I could be wrong.

[n3k5]

Insulated wires that look a lot like bare metal are quite common, e.g. in electromagnet coils.

https://en.wikipedia.org/wiki/Magnet_wire

The insulation melts away where it comes in contact with hot solder, so it's very easy to work with for hand-wiring projects.

[fenwick67]

Looks like they only appear to be touching in the photo but aren't really.