Ten years ago, Wiz Khalifa and Curren$y linked up for the mixtape How Fly, and on Friday the tape's sequel 2009 has materialized. The project's nostalgia-inducing cover art throws back to 2009 A.D. – look closely and you'll see the titular mixtape's tracklist on the coffee table – and figures from the original tape return, like Sledgren, who worked on the original tape and contributes production here. It's a throwback, but the chemistry is as fresh as ever. Ty Dolla $ign and Problem show up for features. Listen below.