Press U, then pick a number between 1 to 0. But don't play 2 or more songs at once songs numbers bellow || || \/ 1 - dummy 2 - toriel 3 - bone 4 - spear 5 - glamour 6 - spider 7 - mega 8 - asgore 9 - hopes 0 - theme space - stop all music
thanks to Squirtle243 for the idea of Undertale thanks to GreenRocket02 for the support
