Nobody Closed the Sarcophagi

For Count Ottavio dei Catii's eighth birthday party (he's actually fifty), three great singers from history have been summoned back from the dead for a grand musical performance. Unfortunately, the necromancer tasked with reviving the corpses used a corrupted stone for one of them, and then... promptly collapsed! Now one of the singers — nobody knows which one of the three — walks around the party, free, completely unaware that their singing may be lethal to every soul in the room! Play as our protagonist, only somewhat knowledgeable about necromancy, as they try to navigate the party and get close to the revenants, grappling with self-doubt and their own past as they talk about art, connection, and fate, in order to sneak a glimpse of the singers' reanimation stones, find the corrupted one and extract it before it's too late... and all of this while trying not to completely ruin the show!