So, SonicTran1327 actually pointed the Phase 1.5/2/3 pattern out on YouTube. Phase 1 lead pattern: Lead is some edited version of the Megalovania of that Sans. Phase 1.5/2/3 lead pattern: First 5 notes are edit from It's Raining Somewhere Else (Or the AU replacement), rest of first half is from "sans." (Or the replacement), and second half is from "STMPWYFS" (Or the replacement).
