oh this is really cute. i actually played without my headphones on at first but noticed that you made the music so i put them on as i wrote this and its such a funny little tune for managing elevators hahaha.
i kinda wish i could just press the four buttons at will, especially for loading people into the elevator - i wanted to throw like 4 of them in a row at points even if that wasn't particularly the safest option, but you always have to wait for them to scoot up to the front of the line.