Question: Which film has the director who is older than the other, Nanette Makes Everything or Hard To Be A God (1989 Film)? 
Sentence (from "Hard to Be a God (1989 film)"): Grant Stevens performed the title song, while the rest of the musical score was written and played by Hans-Jürgen Fritz, ex-keyboardist for the German progressive rock band Triumvirat.
Relevant evidence: No