Visually, It is very similar to New Donk City, a area in Super Mario Odyssey, but it is a traveling stage, like Skyloft . A gimmick in this stage is that if a fighter hits one of the band members or Pauline, the music evolves into Jump up superstar, a popular song from Super Mario Odyssey.
This stage is originally from Super Mario Odyssey. It is from New Donk City in the Metro Kingdom, the seventh location you unlock in the story.
The bottom of the stage, with Pauline and The Super Mario Players.
The top of the stage, with the Odyssey and Captain Toad.