Now, there are a lot of GRAMMY-wining artists who are not Taylor, but the 1989 singer is still the runaway favorite guess among Kesha's fans, with some particularly astute observers noting Kesha used 13 emojis in her cryptic post -- Taylor's favorite number for a variety of different reasons.
Besides that grade-A level extrapolation, there are a couple of other hints that a Tay-sha project could be in the works!
First, Gigi Hadid confirmed exclusively to ET at her Tommy Hilfiger runway show at New York Fashion Week last week that Taylor is indeed working on new music, saying, "She is starting to go back to work in the studio again."
And second, Taylor supported Kesha during her daunting legal battle with Dr. Luke, giving her $250,000 in February. Her rep told ET the donation was "to help with any of her financial needs during this trying time."
ET has reached out to reps for both Kesha and Taylor.
If the two are working together, it remains to be seen how fellow artist Demi Lovato may respond, after the singer rallied behind Kesha, but was critical about Taylor Swift's donation, questioning whether it did enough to raise awareness for sexual assault issues.
Meanwhile, in August, Kesha dropped her sexual assault case against Dr. Luke, citing the need to get back to her music, writing, "My fight continues. I need to get my music out. I am continuing to fight for my rights in New York. Thank you for all your support."