Pop 2 (5 Year Anniversary) LP

Pop 2 came out in 2017 as a mixtape Charli XCX made with A. G. Cook and the PC Music crowd, stacked with guests, CupcakKe, Carly Rae Jepsen, Tommy Cash, Uffie, MØ, Brooke Candy, Kim Petras, ALMA and Jay Park. Pitchfork flagged it as one of that year's more inventive pop records, and it's held up since as a touchstone for hyperpop. Atlantic presses the original tracklist here.