Pretty funny! Love the use of hard contrasting emotions of working furiously + playing around singing.. I confess I didn't really sing. I just tapped the microphone. Innovative use of the mic too!

..Thinking on this some more, I'm betting this title has a very different connotation where you are, note that invoking "slavery" could potentially detract from the experience of enjoying this game.. In my case, I tried the game because I wanted to see how other game devs are tackling this topic, and I kind of had to forget that in order to get into this game.. 

I know you're probably not thinking about renaming it, but I'd challenge you to try and find a provocative title that works in this genre that gets across the oppressiveness of a corporate work environment, and the exploitive relationship between boss and worker, that doesn't overstep the metaphor and treat lightly the pain and trauma that slavery is still connected to today. 

That way the title isn't fighting the theme so much, and more people can fully enjoy what you've done here.

Happy to discuss more!