I just got back from my Dad’s Birthday party, so sorry for the delay @Cepper1232YT. Anyways, as I was saying.
Detecting whether or not they’re in a radius is very counter-productive, because now not only does every room need to be a perfect circle, but a lot of math is involved. Having bricks by each door leading to a new room is your best bet.
A brick going from lobby to “intermission” room that would turn off lobby music, and then another block that goes from intermission room to the actual obby, which activates the obby music. Finally a brick that’s at the end that when you’re teleported back, ends the obby music and plays the lobby music. Also should I add the scripting for this is a lot less of a burden and easier to understand for someone who’s new to scripting like him.