By Hayden Brooks Mar 4, 2021 On Wednesday (March 3), Stan Twitter went into overdrive when a demo of Mendes' version of the angsty pop track made the rounds. The version has since been removed from YouTube, but a clip of the track is still on the platform and hears the Canadian star offer his take on the Andrew Watt and the Monsters & Strangerz.-produced cut with tweaked lyrics. "Prisoner, prisoner/ Locked up you got me day and night (day and night)/ Lord knows I'm here to satisfy," he sings on the hook. "Prisoner" served as the follow-up single to Cyrus' smash, "Midnight Sky," off