Double-click flag so that the music syncs! You can replace characters by going into their costumes and replacing the poses with your characters' poses. You can also change some of the animation code if you want it to look different.
Huge thanks to @Ant_to_the_max for helping me get the chart and other stuff for this! Sprites were made by me but make sure to check out @Ant_to_the_max ays of the song also! I can't wait to make Bygone purpose!