Over the weekend, an eight-song Kendrick Lamar project titled Bad Kid Chill City leaked online. Although it came complete with features from the likes of SZA, Jay Rock, Ab-Soul, Busta Rhymes, Isaiah Rashad, and Lance Skiiiwalker, the EP is not an official release, and seems to be cobbled together using tracks from across Kendrick’s career. It even features fan-made album artwork.

Some tracks on Bad Kid Chill City appear to be recent, while others reference songs or moments that date back to the early years of Kendrick’s career. The EP came just before a second onslaught of leaks including music by SZA and ScHoolboy Q. While the Kendrick project was not officially sanctioned by TDE, the songs do offer some clues about when they were recorded.

Genius rounded up the origins of every song on the fake project: