The primary musical piece associated with season 1, episode 17, titled " Hat Trick ," is the orchestral score composed by Mark Isham . While most of the episode features original score elements like the "Hat Trick" theme and "The Hedge Maze", a notable popular song used specifically for the episode's promotional trailer is "People Are Strange" by Echo & The Bunnymen . Episode Score and Themes

: You can find piano sheet music for the general Once Upon a Time Main Theme on platforms like MuseScore.

: The primary theme for the episode, reflecting the mysterious and unstable nature of Jefferson (the Mad Hatter).

: A piece that underscores Emma's first encounter with the character. Soundtrack and Sheet Music

The episode's background music is part of the original television soundtrack, with specific tracks titled after key moments in the plot:

: Orchestral music playing during the scenes set within the Queen of Hearts' domain.

For those looking for sheet music or to listen to the score, most themes are compiled in the official by Mark Isham .