The main subjects are four characters from the game Undertale—Frisk, Sans, Papyrus, and a character resembling Toriel—arranged in a static composition. They are positioned in front of a black grand piano against a yellow background, with the character resembling Toriel sitting at the piano, the yellow character playing a cello, the small character playing a ukulele, and Sans playing a trombone. The scene remains completely still throughout the loop, with no movement or changes in action.