Grimes is a fan of Bryan Johnson, the multimillionaire and immortality influencer who spends his time trying to fight death via an extremely strict and sometimes strange lifestyle called Project Blueprint. He is perhaps best known for undergoing plasma transfusions with donations from his teenage son a few years ago and calling himself “immortal unc.” Earlier this year Grimes tweeted that she is “so into Bryan Johnson,” explaining she “got into it as a joke but after getting my data he did successfully gamify my health in my mind.” Now, she’ll be DJing his livestreamed shroom trip.

Tomorrow Johnson (who, like Grimes’ ex Elon Musk, got rich from PayPal money) will take 5.24 grams of magic mushrooms “for science,” measuring his biomarkers along the way. The tech CEO tripped on the same amount a few weeks ago, but it was not livestreamed. Other special guests for the virtual event include Mr. Beast and Salesforce CEO Marc Benioff. You can watch below when it starts on Sunday.

UPDATE: Grimes concluded her set with Beach House’s “Space Song.” Johnson’s Blueprint co-founder Kate Tolo deemed it “maybe the best experience of his life.”

In other Grimes news, last week she spoke at the Artist And The Machine AI summit in LA.