if you want to you can finish the mod by putting more songs and or fixing the input system. this one is better because it gives you an ability to record charts and use multiple keys so you don't have to manually chart or make tons of sprites for the arrows. there's still a flaw where you can hold arrows and win. this is why there are only 6+ key songs in this.
bad performance? try: https://turbowarp.org/1064541621 1 key: space 2 key: sk 3 key: s space k 4 key: askl 5 key: as space kl 6 key: sdfjkl 7 key: sdf space jkl 8 key: asdfhjkl 9 key: asdf space hjkl