He doesn't seem totally distraught by her pun, and she can tell he's a little more upbeat at the idea of getting to sing with her. This was good, she was going to help him release his ties to the earthly realm and move on get a good grade in friendship.

"Of course I've heard Under Pressure. It's Bowie and Freddie Mercury. I'm gay." she states, as if that explains everything, "but you're going to have to handle Freddie's part, I don't have the range for it."