Mission Musician is a Map added during an Roblox Event. It is located in a Music Building.
You and your friends decided to visit your uncle director's music studio on for the weekend. BUT HE DOESN'T KNOW THAT!! Unfortunately, you feel asleep while they were recording and they left without you! They also locked the doors because that's what most people do before they leave their properties! However, the security is still in the building, so you better get out of there before they catch you!
This room was part of the Coco event. Upon completing it, you obtained the Marigold Petal gear.