The song is Gravity Falls. It works with this (quite popular) 8-bit music maker https://scratch.mit.edu/projects/87829696/#player to use it 1. copy the link above and paste it into the bar at the top that might currently be read as "https://scratch.mit.edu/projects/215980907/ 2. the rest is explained when you click "import" on his/her project.
Song doesn't belong to me, obviously.
