Song Kang, Lee Jun Young and Jang Gyuri Preview Musical Friendship in ‘Four Hands, Two Sonatas’

tvN’s upcoming drama Four Hands, Two Sonatas has offered a first look at the youthful connection at the center of its story. New stills introduce Song Kang, Lee Jun Young and Jang Gyuri as students brought together by classical music at an arts high school, where their shared ambitions will shape a relationship that stretches well beyond the classroom.

The title refers to the piano technique in which two performers play on one instrument at the same time. That idea of coordination, tension and listening is built into the drama’s premise. The series follows three young musicians from their teenage years toward adulthood as they pursue professional careers, with friendship, love, competition and growth expected to move alongside their artistic development.

Three musicians, one formative school setting

Song Kang plays Kang Bi Oh, a piano major whose composed appearance and careful approach to his studies are visible in the newly released images. He is shown in a neat uniform, selecting sheet music and practicing with concentration. The character’s quiet diligence suggests that music is not simply an extracurricular interest for him, but the discipline around which he organizes his daily life.

Lee Jun Young takes on the role of fellow piano major Choi Jung Yo. His introduction presents a notably different energy: a student who wears a hoodie beneath his uniform, speaks with an easy manner and carries an outwardly detached expression. The contrast between the two pianists gives the drama an immediate point of dramatic friction, especially when both are working toward similar musical goals.

Jang Gyuri appears as Hong Jae In, a viola major who links the two boys within the trio. Kang Bi Oh’s longtime friend, she meets Choi Jung Yo after he arrives as a transfer student. The stills portray her as warm and observant, equally at ease walking to school with Bi Oh and listening closely as the pianists perform. Her place in the group may prove especially important as their bond is tested by changing priorities.

Music as collaboration and competition

The four-hands piano scenes point to the series’ central image of collaboration. Sharing a keyboard requires precision, awareness and a willingness to give another player room, yet it can also expose differences in tempo and interpretation. In the drama, that musical arrangement appears set to mirror the way its characters learn to work beside one another while negotiating their own identities and ambitions.

The setting gives those pressures a familiar but flexible framework. Practice rooms, corridors and campus paths are places where students can form routines and private alliances, while auditions and performances can turn those same spaces into arenas of comparison. By following the characters over a longer period, the series has room to show how early impressions evolve as talent, opportunity and personal relationships pull the trio in new directions.

For Song Kang and Lee Jun Young, the paired-piano premise also places their characters in close creative proximity from the outset. The story does not frame music as a background detail; it is the language through which their differences, trust and rivalry are likely to become visible. Hong Jae In’s viola studies expand that perspective beyond the two pianists, making the group’s shared artistic environment feel broader than a single partnership.

A late-August premiere

Four Hands, Two Sonatas is scheduled to premiere on August 29 at 9:10 p.m. KST. The early material emphasizes a coming-of-age story rooted in the discipline of classical performance, with its young leads beginning at the point where possibility and pressure are inseparable. As the trio’s school days unfold, the drama will trace whether their special connection can endure the demands of adulthood and the pursuit of a life in music.