Netflix is expanding its K-drama lineup with Four Hands, Two Sonatas, an emotional coming-of-age series that blends music, friendship, rivalry, and romance. Set in the demanding world of young classical musicians, the drama follows two gifted pianists whose lives become inseparable as they compete to become the very best.

From its star-studded cast to its release date, here’s everything you need to know about Four Hands, Two Sonatas.

What is Four Hands, Two Sonatas About?

Set at a prestigious arts high school, the series follows students whose lives revolve around music and the relentless pursuit of excellence.

At the center of the story is Kang Bi O, a piano prodigy whose flawless academic record and award-winning performances have made him one of the school’s brightest stars. His carefully planned future begins to change when Choi Jeong Yo unexpectedly enters his life. Once a gifted pianist himself, Jeong Yo walked away from music after a difficult childhood. Returning to the piano forces him to confront both his past and the passion he believed he had left behind.

As the two young musicians challenge one another inside and outside the practice room, their rivalry gradually evolves into something far more meaningful, pushing both of them to grow as artists and individuals.

The story also follows Hong Jae In, a viola student with exceptional musical sensitivity who becomes an important source of support as the trio navigates ambition, friendship, and the emotional pressures of pursuing perfection.

Song Kang Returns After Military Service

One of the biggest reasons fans are looking forward to the series is the return of Song Kang.

Often nicknamed the “Son of Netflix” because of his long list of successful collaborations with the streaming platform, the actor stars as Kang Bi O in his first major project since completing his mandatory military service.

Known for series including Sweet Home, Love Alarm, My Demon, and Nevertheless, Song Kang takes on a role that explores both extraordinary talent and the hidden pressures that come with constantly striving for perfection.

Lee Jun Young Plays His Biggest Rival

Opposite Song Kang is Lee Jun Young as Choi Jeong Yo.

Unlike the disciplined and polished Bi O, Jeong Yo approaches music with instinct and emotion. Although his childhood forced him to abandon the piano for years, his natural ability remains undeniable. The contrast between the two pianists creates the emotional foundation of the series, with each inspiring the other to discover new sides of both their artistry and themselves.

Lee Jun Young continues his impressive run of Netflix projects after appearing in titles such as Weak Hero Class 2, When Life Gives You Tangerines, Mask Girl, and D.P.

Jang Gyu Ri Completes the Main Trio

Jang Gyu Ri stars as Hong Jae In, a viola major whose remarkable ear for music allows her to connect deeply with the performances around her. Having admired Bi O’s playing since childhood, she becomes an important friend to both musicians as they navigate increasingly complicated emotions and intense competition.

Before focusing on acting, Jang Gyu Ri was also known as a member of the K-pop group fromis_9.

Who Else is in the Cast?

Alongside the three leads, the series features an extensive supporting cast that includes Kim Joo Heon, Yoon Se Ah, Jung Jin Young, Seo Jae Hee, Kim Hye Hwa, Kim Min, Seong No Jin, Lee Myeong Ro, Yoo Tae Joo, and Lee Sang Jun.

Together, they help bring the competitive world of the prestigious music academy to life.

What Can Fans Expect?

The first teaser offers a glimpse of breathtaking piano performances, emotionally charged confrontations, and the growing connection between its two central musicians.

While competition fuels much of the story, Four Hands, Two Sonatas appears equally interested in exploring the emotional cost of chasing perfection. Themes such as friendship, ambition, healing, identity, and first love are expected to play significant roles throughout the series.

Rather than simply telling a story about music, the drama uses performance as a way to explore how different people express themselves, confront their past, and find the courage to move forward.

When Does Four Hands, Two Sonatas Premiere?

Four Hands, Two Sonatas premieres globally on Netflix on August 29, 2026.

The series consists of 12 episodes and marks one of Netflix’s biggest Korean drama releases of the year.