The whole show has a fantastic soundtrack that's mainly inspired by early 20th-century Americana, though it takes the time to include opera and showtune-style pieces as well.
- Into the Unknown
, a soft piano ballad that encapsulates and sets up the mood of the series perfectly. - Greg's very cheerful ragtime number, Potatoes and Molasses, and much later its Dark Reprise Potatus et Molassu. The Latin lyrics transform said happy number into a slow, mournful dirge. Bonus points for ending with the "grow, tiny seed" line from Come, Wayward Souls.
- From "Songs of the Dark Lantern", we get the frantic and colorful A Courting Song, accompanying Wirt's very silly wedding preparation by the tavern's patrons. The sheer speed at which the song moves forward and back is equally disorienting.
- Speaking of "Songs of the Dark Lantern", we have what fans simply refer to as the Tavern Keeper's song, a creepy warning of what the Beast will do to those lost too long in the Unknown.
- Over the Garden Wall, a pretty, nostalgic tune played as Wirt and the lake frogs play in a makeshift jazz ensemble, complete with Title Drop, the only point save for the very end when the phrase is directly said.
- Come, Wayward Souls, the operatic Villain Song by the Beast. Although the opera section was nice, fans thought that was all to it until the composer's cut was released, revealing Greg has a large portion to himself, used to heartbreaking and horrifying effect.
- "The Fight is Over", a T. Rex-style glam rock piece that perfectly underscores The Reveal that we're no longer in the folk-inspired Unknown.
- "Tiny Star", the Synth-Pop song that plays during the Halloween party, which (naturally) sounds completely different from the rest of the soundtrack but perfectly captures that specific moment.
- "Old Black Train", a charmingly retro and innocuously laid-back country song with ominous undertones and lyrics that hint very nicely at the nature of the Unknown.
- The soft and dreamy Patient Is the Night. In that same episode, the joyful harvest song the Pottsfield people sing is great, as well as the pretty string music playing right as the boys enter the town.
- The Old North Wind is introduced with a very jazzy Villain Song that calls to mind old Cab Calloway cartoons and the work of Randy Newman.
- The show's instrumental music is nothing to shake a stick at either, especially the low and warm string version of "Into the Unknown" that plays at the beginning of every episode but the first, each time perfectly establishing the mood of the series.
- The Highwayman's song. Comes out of nowhere, leaves just as fast, and still manages to be incredible.
- One is a Bird is a lullaby sung by Shirley Jones (voice of Beatrice's mother). It plays as a motif for Beatrice, especially when she discusses her family and is finally sung out loud (the first stanza) when Wirt and Greg are rescued. The last line (unused in the show but not in the soundtrack) suggests that despite everything, Beatrice's family still loves her. Its touching melody reinforces the show's broader recurring emphasis on family and familial love throughout all the different adventures and characters.
