"Ponies just bursting into song in random places at the drop of a hat? Who does that?!" were her exact words while in Manehattan.
Yet shortly after her visit to the big city, Rainbow Dash wakes up one morning unable to stop spontaneously singing.

Perhaps the city left a bigger hoofprint on her than she'd like.

Written for EQD's Writer's Training Grounds Challenge, Prompt 2, now for your enjoyment.

Currently under construction.