Shreddage - Dave's Fun Expansion Pack OST? 

V3 of this song, but I never uploaded the other versions to YT
(which in hindsight is a good thing because they both SUCK)
Video made with FL Studio ZGameEditor Visualizer plugin
Effect author credits:
Youlean Blur - Youlean
Youlean Time Stamp - Rado1, Youlean
TextDraw - Jph Wacheski jph_wacheski.itch.io/