I've been playing around with Theremin the past fews days trying to memorize some songs on it. When I get good enough and not making mistakes I'll try and record/post some videos. This is coming from someone where the only piano experience I have is "Mary had a little lamb"

The songs I've been trying are:
"Mary had a Little Lamb" (for beginners)
The X-Men theme (which is pretty easy)
Super Mario Bros. theme music. (I've got half of this down so far... still haven't really tried the second, more quicker half)