Okay, good idea, but not rhythm based: you can easily sightrwad this and beat the level iven with no music at all. 1. Make timings much tougher, like 3 to 5 frames each. 2. Make the player invisible. Now you can have the proper RHYTHM hell experience.
Is that Geometry Dash Rhythm Hell from the video that looks like JZBoy, Just Shapes & Beats, Pink Corruption, Project Arrythmia, Super Paper Roblox character Cumulus, Geometry Dash, Taiko No Tatsujin, Bomberman, My Melody anime, Countryballs, Radio Gosha, Squishmallows, etc.? It looks kawaii.