Note to self: READ THE CLUES CAREFULLY. I know I didn't have many crossings yet, but how on earth did I come up with BLACK METAL as the genre for a "cowboy" band and a "trucker" band? The SW corner gave me the most trouble, since I had THANOS instead of ULTRON in there for the longest time. I totally overthought 50A and 51D (50A was much simpler than I imagined, and for 51D I ended up filling... APPLE. Because an apple a day keeps the doctor away.
I also typed in and deleted QUOI multiple times thinking it meant "why". Why is "pourquoi", literally "for what?"