Charli XCX is back in the studio amid her rumored feud with Taylor Swift. The "Apple" singer, 33, took to X on Sunday, October 5, to share a short video taken inside a recording studio. An audio engineer could be seen sitting at a mixing board as several stringed instruments created a swelling sound, followed by two quick notes. Charli (real name Charlotte Emma Aitchison) simply captioned the cryptic post with a text heart.