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Let the lyrics examinations begin! Taylor Swift is back in the recording studio, working on new music, and, once again, nothing seems to be off limits.

E! News reports that she's already penned songs about exes Tom Hiddleston and Calvin Harris, although there's no guarantee that they will actually make it to the final cut of an album.

While some of Taylor's songs in the past have blasted exes, a source tells E! that she doesn't harbor any ill will toward her two most recent former flames.

"[Taylor] has spoken to Adam on text," the source said, adding that the talk doesn't center around "getting back together," but it's "more of a friendly check-in." In September, it was reported that they were "friends again."

The source said, "She also is on good terms with Tom at this point."

The "Shake It Off" singer split with Calvin in June after nearly a year and a half together. She quickly began dating Tom, but that fizzled out in September.

As has previously been reported, Taylor and Drake are working on new music. There's also been recent speculation that they are romancing each other, although sources have said otherwise.

The music they're working on is "different" but has a "very catchy" sound, a source previously told E!, adding, "They've both been having a great time in the studio."

In addition to her work with Drake, Taylor also recently penned a song of country act Little Big Town called "Better Man." Naturally, many wondered who that song was about, but nothing has been confirmed.

Little Big Town member Philip Sweet told Billboard, "Taylor is just musical. I don't think she's defined by anything other than she is a songwriter and an unbelievable performer and entertainer and incredible businesswoman.

"She is all things music, and we have known her for a long time and when she sent us this song we loved it instantly and just the fact that she wrote it is special too. It's fun to draw attention to just her songwriting. She is an incredible songwriter and we are the beneficiaries of that right now."