Strictly speaking, a Theremin uses a pair of antennae that act as capacitors in a specific R/C circuit. Looking at [aritrakdebnath2003]’s MIDI THEREMIN, we see it works differently, but it does play ...

Talk to Captain Matthews and he will take you to the Proto Merkabah. You can always return to him later, if you want to return to the Durandal or the Dock Colony... Go through the Air Lock to get to ...