The Lonely Island’s mockumentary Popstar: Never Stop Never Stopping is coming out in a little more than a week, and we already know that it’ll be packed with music-world cameos, including Seal, Usher, and Andy Samberg’s wife Joanna Newsom. Now Pitchfork reports that there will be some more big names in there, including Arcade Fire’s Win Butler and Régine Chassagne, A$AP Rocky, Nas, RZA, Justin Timberlake, and Mariah Carey.

Meanwhile, the Lonely Island’s Samberg and Akiva Schaffer recently appeared on the Sway In The Morning radio show and talked a bit about rap. It’s weird to think of them as musicians, but they did mention that they’ve been offered beats from some very important producers, turning them down because they didn’t think it’d make sense to be funny on those tracks. They ended up saying no to beats from RZA and J Dilla. And on the same show, Samberg talked a bit about Newsom’s taste in rap, which is fun to think about. To hear him tell it, she likes Kendrick Lamar, Kanye West, and A$AP Ferg and Future’s “New Level.” Here’s the interview:

Popstar hits theaters 6/3.