For one night only, we’re opening a secret subterranean club at Mińska 65, a space that few knew existed, but which tonight houses Klub Ephemera: blink and you’ll miss it. Admission can be purchased as part of a ticket package with the concerts upstairs, or separately, with a lineup featuring viral sensation Ramon Sucesso, bringing his take on Brazilian Funk to the Tiktok generation, and the brilliant Parisian Crystallmess, who also blew up the Internet after her unannounced DJ set during Frank Ocean’s Coachella performance. Opening is Kraków’s jul.ci exploring all things bassy, while Poznan’s Monster closes with a fun, euphoric set.