The band members: Brandon Armstrong, Justin Rubenstein and Joshua Kaufman had performed the instrumentation for the score, and conjunctionally wrote lyrics for the tunes along with McHale.

The soundtrack to the series, featuring 32 tracks and totaling around 44 minutes in length, was released in the form of a double-disc 180-gram vinyl record by Mondo in July 2016.

[6] The extended soundtrack debuted at San Diego Comic-Con on July 21, 2016, with a limited 1,000 copies, featuring a cover designed by Sam Wolfe Connelly.

[9][10][11] The cassette features over twenty minutes of poetry spoken by Elijah Wood (in character as Wirt) and music performed by the Blasting Company.

[15] Jenna Anne of Marvelous Geeks Media wrote "From fun lyrical tunes that each reference different time periods to epic score, this album is an all encompassing fall mood while highlighting the quirky-spooky-fun ride that is Over the Garden Wall.

"[19] Writing for Afterglow, Caroline Harrison said "Incorporating American Gothicism and historical musical styles, "Over the Garden Wall" creates a diverse, yet cohesive sound of fall—its worries and comforts.

Primarily utilizing American folk and jazz traditions, the soundtrack's historical sound integrates nostalgia into every track, whether it is meant to be scary or sweet.