Jang Gyuri Reveals Her Musically Gifted Character in tvN’s “Four Hands, Two Sonatas”

A new coming-of-age musical drama just gave fans their first proper look at one of its leads, and it’s already setting up a compelling emotional triangle.

Four Hands, Two Sonatas- Overview

Meet Hong Jae In

Jang Gyuri plays Hong Jae In, a character built around an extraordinary musical gift — perfect pitch. Raised under the influence of her mother, who runs a classical artist agency, she channels this talent into mastering the viola. Her ear is so finely tuned that she can identify a performer just from hearing a brief musical phrase, a skill she’s sharpened through her love of quietly listening to music.

A Deep Bond With Song Kang’s Character

At the heart of the story is Hong Jae In’s close connection to her childhood friend, Kang Bi Oh, played by Song Kang. Their bond runs deep enough that she can recognize his piano playing from a distance, without needing to see him at all — a detail that hints at years of shared history and quiet familiarity between the two.

Enter the Transfer Student

Just as things seem settled, a new figure disrupts her world. Lee Jun Young’s character, transfer student Choi Jung Yo, brings a musical style that resonates with Hong Jae In in an entirely new way, setting the stage for a slow-building emotional shift that could complicate her long-standing connection with Kang Bi Oh.

What’s Coming

Set against the backdrop of an arts high school, Four Hands, Two Sonatas promises to explore friendship, rivalry, and first love as its characters grow from teenagers into professional musicians. With its premiere date now locked in, anticipation is building around how this musical love triangle will unfold.

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