Za Bakdaz (the back days?) was a space-age operetta that Klaus Nomi was working on with collaborators George Elliott and Page Wood during 1979. It was unfinished at the time of his death in 1983. Working from old tapes, notes and past discussions with Klaus, Elliot and Wood completed the project and released it as an album in 2008. You can purchase it here.
In this video clips from 1960 German sci-fi film First Spaceship On Venus are wedded to the overture and song “Cre Spoda” from Za Bakdaz. It’s eerily effective.