It's a fantasy role-playing game.

DM: You are Scanlan Shorthalt, a gnome bard . You are the member of the famous group of adventurers. Previously, Vax stealths into the kitchen and Vex follows. They go down a small staircase that leads to a cellar, and the rest of Vox Machina (excluding you) follow suit while the kitchen staff's attention is diverted.
DM: Dr. Dranzel picks up his instruments and you guys start playing back and forth with your flutes just picking off-- improvising off of the classic!  Make another perform check.
Player: Everybody give it up for Zed on drums! 24!
DM: All right. Kaylie is trying to keep up and you can see her face starting to go red. But she's determined on this, and she continues pushing this into an improvisational flurry of notes that completely walks around your performance, previously done. And you find yourself having to take a step back as she begins stepping up onto the table. And now, even at her gnomish height, is looking over the entire crowd, as people-- who were not previously as interested-- are starting to turn around and look towards you two play.
Player: I can't be one-upped. I use Minor Illusion to create sort of a mirror image of myself, over myself, also playing the flute.
DM: Make another performance check, with advantage.
Player: With advantage? Not as good, 22.
DM: 22, all right.
