Just click the green flag and listen.
"Releases will be staggered and out of order." - Man on the Internet This is track 14 of the CAMP Undertale OST: An Artist's Song. It plays at the end of a pacifist route after Jessie's RESET and plays the right way. Miya plays it to them, explaining her hard work, but only after the True Pacifist ending and they agree to listen.
