[6] Yoon Ah-yi, an impoverished student at Sewoon High School, has stopped believing in magic since childhood, and, after significant misfortunes, wishes to grow up faster to escape the stress of her life.

[19][20] The series was choreographed by Hong Se-jeong of the musicals Phantom and Laughing Man, while illusionist Lee Eun-gyeol served as the magic advisor.

[25] In April 2021, Netflix officially announced production as well as casting confirmation with Ji Chang-wook, Choi Sung-eun, and Hwang In-yeop.

Ji Chang-wook said that he worked while talking a lot with the production team about "how to express the emotions of the characters at the point where there was transition to the music in the play.

[34] The Sound of Magic was ranked 7th globally in the Netflix TV shows (Non-English) category, one day after its release.

[39] Kayti Burt of Paste rated the series 7.3 out of 10 and felt that "lack of narrative clarity keeps The Sound of Magic from becoming something special".

Burt appreciated the direction of Kim Seong-yoon and wrote, the "dazzling visuals and the cast's earnest performances (and solid vocals), make for an enjoyable, brief trip around this merry-go-round ride of a story.

"[40] John Serba reviewing for Decider wrote, "The overlong episodes could be nipped and tucked here and there, but The Sound of Magic offers a fine balance of smart and silly."

"[41] Pierce Conran of the South China Morning Post gave 3 stars out of 5 and criticized the narrative for "surprising lack of characters, locations and even extras."