Rolling in the Clouds
From Lumapedia
Rolling in the Clouds is the only star in Rolling Green Galaxy. It's meant to introduce the star ball, but the tutorial is skipped if the ball is first used in a later level - something presently taken advantage of in 120 Star runs.
The individual level world records are 47.086 for Mario by Tiber and 45.250 for Luigi by MusicMatt7.
Mario
Individual Level
https://www.twitch.tv/videos/1025862411