From the Super Mario Wiki
Windup Stairs (known as Wind-Up Stairs in PAL version) is the eleventh course of Episode 2 Captain Toad: Treasure Tracker.This course takes place on a windup music box. Toadette needs to reach the top of the music box while avoiding the Spike's attacks, and then land on his head in order to defeat him and open the doorway to the Power Star.
The Pixel Toad can be seen in the arch of the moving ramp to Spike's left.
Names in other languages