1: Charli XCX reveals she contributed unrecorded music for Britney Spears.

2: The pop star confirms her involvement in writing songs for Spears.

3: Charli XCX sets the record straight on the unrecorded music.

4: Fans are excited to hear about the collaboration between the two artists.

5: Speculation arises about the potential hits Charli XCX wrote for Spears.

6: The singer-songwriter shares insights into her creative process with Spears.

7: Charli XCX's revelation sparks interest in the unreleased music.

8: The news of Charli XCX's contributions to Britney Spears' music excites fans.

9: Stay tuned for updates on any future releases of the collaborative tracks.