Well that's because she kind of didn't. It's a side release.
A very good one that's doing well commercially for a jazz album, I might add, but still a side release.
It may technically be considered a studio album but it's not within the standard Gaga track of albums, as evidenced by the fact she's working on a more conventionally "Gaga" album already.
ARTPOP is largely a culmination of Gaga's career thus far, including all her past works. Thus, if you dislike ARTPOP, it's safe to say that you dislike Gaga. Since I know you don't dislike her, I can deduct from that that you actually do like ARTPOP. So welcome to the club sis!
