"Why, I'm fine, thanks for asking!" Rusty replied, pretending to have been there the whole time and pretending that he was the one that was asked the question.
~10 MINUTES EARLIER~
(Well, I think it was 10 minutes, but I'm not too sure.)
Rusty had ordered two drinks just as that beautiful sweet song started to be sung in that sweet, sing-song voice, trying to figure out how they were made and how things reacted when they were mixed.
Being an alchemist, Rusty had a natural tendency to do this, and was considering getting a bar job in Canterlot. He didn't think, however, that they would be able to handle such a free-willed pony as he.
As the singing began, the pony singing took Rusty away. Who was that? Something seemed to be troubling her later as she seemed to be looking at her glass in a melancholy demeanor. Rusty decided to abandon his drink experiment for now and walked up to the counter, taking a seat somewhat near the singer pony, when that question was asked: "How are you two doing tonight?"