Development environment is on Windows, so most of the work was done there, as it's just simply faster than making a demo on a C64. Testing and this video capture did happen on the real C64 of course.
There might be similarities to Zak, but actually it's a remix of Burning Chrome's soundtrack: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fRNaWfRhmF8.html