Four Hands, Two Sonatas Is Netflix's Hottest K-Drama Right Now — Song Kang and Lee Jun-young's Piano Rivalry Just Hit a 6.9% Peak Rating

Song Kang's Comeback K-Drama Is Breaking Ratings

Song Kang is back. After completing his mandatory military service, the actor known for Forecasting Love and Weather and Nevertheless has returned to the small screen with Four Hands, Two Sonatas — a tvN/Netflix romantic drama that's already one of the hottest K-dramas of late 2026. The series just hit a peak rating of 6.9% in South Korea after only two episodes, a remarkable debut for a Saturday-Sunday time slot.

The drama, which premiered on tvN on August 23 and streams globally on Netflix, pairs Song Kang with Lee Jun-young (of U-KISS fame and the film Hail to Hell) as two rival pianists forced to share one instrument — literally. A four-hands sonata requires two performers at one piano, and the show uses that musical concept as a metaphor for the tension, intimacy, and competition between its leads.

The Story Behind the Music

In Four Hands, Two Sonatas, Song Kang plays a brilliant but emotionally guarded pianist whose career was derailed by a mysterious scandal. Lee Jun-young plays his polar opposite: a charismatic, rule-breaking musician who thrives on chaos. When they're forced to compete for the same prestigious position, their rivalry evolves into something far more complicated.

The drama was written by Jung Hye-jung (writer of Our Beloved Summer) and directed by Kim Sang-ho, bringing a creative team with a proven track record of blending romance with emotional depth. Early episodes have been praised for their gorgeous cinematography, with concert scenes shot to capture the physical intimacy of two people creating music together.

Why Song Kang's Return Is a Big Deal

Song Kang has been one of Netflix's most reliable K-drama leads since Love Alarm made him a household name. His chemistry with co-stars is legendary, and Four Hands, Two Sonatas continues that streak. The show's early success suggests that Song Kang's return from military service hasn't dulled his star power — if anything, it's made audiences hungrier for his work.

With episodes dropping weekly on Netflix, now is the perfect time to jump in. Two episodes in, the drama is already building momentum, and the limited episode count promises a tight, focused story without the filler that plagues longer K-dramas. If you're into music, romance, and a healthy dose of rivalry, this one's for you.