I Wanna Hear Your Song Cast , Yeon Woo-jin as Jang Yoon, a tone-deaf pianist, and Kim Se-jeong as Hong Yi-young, a timpanist struggling with insomnia, the series explores their unique connection.
Table of Contents
Introduction

“I Wanna Hear Your Song” is a captivating South Korean romantic comedy-mystery drama that blends heartfelt romance with intriguing suspense. The series follows Hong Yi-young (played by Kim Se-jeong), a talented timpanist in an orchestra who suffers from chronic insomnia. She discovers an unexpected remedy when she meets Jang Yoon (portrayed by Yeon Woo-jin), a charming pianist who is tone-deaf but has a mysterious past.
As Yi-young and Jang Yoon form a unique bond through music, they uncover hidden secrets, emotional struggles, and the healing power of connection. The series masterfully weaves romance, mystery, and the beauty of music, offering a fresh take on the Kdrama genre. With standout performances from a talented cast, including Song Jae-rim and Park Ji-yeon, “I Wanna Hear Your Song” delivers a heartfelt narrative filled with emotional depth, suspense, and the transformative magic of music.
I Wanna Hear Your Song Cast
Yeon Woo-jin as Jang Yoon / Jang Do-hoon
- Role: A charismatic pianist in an orchestra who is tone-deaf, hiding a mysterious past.
- Character Insight: Jang Yoon’s charm and warmth mask his emotional struggles and secrets tied to a tragic incident. His unexpected connection with Hong Yi-young brings both healing and new challenges.
- Notable Works: “The Moon Embracing the Sun,” “Marriage, Not Dating.”
Kim Se-jeong as Hong Yi-young
- Role: A talented timpanist suffering from insomnia, who can only sleep when hearing someone tone-deaf sing.
- Character Insight: Yi-young is vibrant, passionate about music, and emotionally resilient. Her journey of self-discovery and love unfolds as she forms an unlikely bond with Jang Yoon.
- Notable Works: “School 2017,” “I’m Not a Robot.”
Song Jae-rim as Nam Joo-wan
- Role: The charismatic and somewhat enigmatic conductor of the orchestra.
- Character Insight: Nam Joo-wan’s presence adds tension and complexity, as his leadership and hidden motives influence the dynamics within the orchestra.
- Notable Works: “The Smile Has Left Your Eyes,” “Goodbye Mr. Black.”
Park Ji-yeon as Ha Eun-joo
- Role: A talented and arrogant violinist in the orchestra with a competitive streak.
- Character Insight: Eun-joo’s ambition and complex relationships within the orchestra create conflicts, while her vulnerability adds depth to her character.
- Notable Works: “Dream High 2,” “Love in the Moonlight.”
Jung Sung-mo as Jang Seok-hyeon
- Role: Jang Yoon’s father, whose past and decisions significantly affect Yoon’s emotional journey.
- Character Insight: His character adds layers to Jang Yoon’s backstory, revealing the generational impact of unresolved trauma.
- Notable Works: “The King’s Face,” “The Village: Achiara’s Secret.”
Yoon Bok-in as Park Yeong-hee
- Role: Yi-young’s caring aunt, providing emotional support as Yi-young navigates love and personal growth.
- Character Insight: A warm, nurturing figure who embodies the theme of familial love and resilience.
- Notable Works: “My Mister,” “Reply 1988.”
Park Chan-hwan as Hong Ji-seop
- Role: Yi-young’s uncle, whose relationship with his family reflects both tension and unconditional love.
- Character Insight: His character adds emotional depth, portraying the complexities of family dynamics.
- Notable Works: “Misaeng,” “The Great Queen Seondeok.”
Lee Si-won as Hong Soo-yeong
- Role: Yi-young’s cousin, whose interactions reveal both comedic and heartfelt moments within the family.
- Character Insight: Adds a light-hearted yet meaningful perspective on the themes of friendship and family ties.
- Notable Works: “The Great Seducer,” “The World of the Married.”
Supporting Cast
Jo Yoo-jung as Yoo Je-ni: A character whose interactions add complexity to the storyline.
Kim Sang-gyun as Moon Jae-hyeong: A figure whose role influences the unfolding events.
Yoo Gun as Michael Lee: An individual whose involvement brings depth to the plot.
Kim Shi-hoo as Kim Ian: A person whose connections impact the main characters’ journeys.
Lee Si-won as Hong Soo-young: Yi-young’s supportive friend and fellow timpanist.
Yoon Joo-hee as Yoon Mi-rae: A character whose relationship with Yi-young adds emotional depth.
A-TOM as Moon Jae-hyeong: His role intertwines with the central narrative, adding intrigue.
Park Chan-hwan as Hong Ji-seop: Yi-young’s uncle, whose actions influence her path.
Yoon Bok-in as Park Young-hee: Yi-young’s aunt, providing familial support amidst challenges.
Lee Jung-mi as Director: The director overseeing the orchestral performances central to the plot.
Conclusion
“I Wanna Hear Your Song” (2019) is a heartwarming South Korean romantic comedy-mystery that beautifully blends the power of music with complex human emotions. The drama’s captivating storyline, enriched by its talented cast, explores themes of love, loss, personal growth, and the healing nature of music.
The main cast, led by Yeon Woo-jin and Kim Se-jeong, delivers standout performances that bring depth and authenticity to their characters. Their chemistry, combined with the strong supporting cast—including Song Jae-rim, Park Ji-yeon, and others—creates an engaging narrative filled with mystery, romance, and emotional resonance.
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FAQs
Who plays the lead role of Jang Yoon in I Wanna Hear Your Song?
Answer: The role of Jang Yoon is played by Yeon Woo-jin, a talented pianist with a mysterious past and a hidden emotional depth.
What character does Kim Se-jeong portray?
Answer: Kim Se-jeong plays Hong Yi-young, a passionate timpanist suffering from insomnia who finds solace in an unexpected connection with Jang Yoon.
Is Song Jae-rim a main or supporting character?
Answer: Song Jae-rim plays Nam Joo-wan, the charismatic conductor of the orchestra, serving as a main character whose leadership adds tension and intrigue to the story.
What role does Park Ji-yeon play in the drama?
Answer: Park Ji-yeon portrays Ha Eun-joo, a talented violinist with a competitive edge, whose interactions with other characters create emotional conflicts and growth.
Are there any notable supporting characters in the series?
Answer: Yes, the supporting cast includes Jo Yoo-jung as Yoo Je-ni, Kim Sang-gyun as Moon Jae-hyeong, and Yoon Bok-in as Park Yeong-hee, each adding layers of complexity to the narrative.
Did the cast receive any awards for their performances?
Answer: While specific awards for the cast may vary, the drama and its performers were well-received for their emotional depth and chemistry. Check for recent award listings for updates.
What other dramas or films have the main cast appeared in?
Answer:
Yeon Woo-jin: “The Moon Embracing the Sun,” “Marriage, Not Dating.”
Kim Se-jeong: “School 2017,” “I’m Not a Robot.”
Song Jae-rim: “The Smile Has Left Your Eyes,” “Goodbye Mr. Black.”
Park Ji-yeon: “Dream High 2,” “Love in the Moonlight.”
Is I Wanna Hear Your Song based on a true story?
Answer: No, the drama is an original fictional work, crafted to explore themes of love, mystery, and the transformative power of music.
Are the characters in I Wanna Hear Your Song connected to real-life events or historical figures?
Answer: No, the characters are fictional, designed to reflect modern-day emotional struggles and personal growth through music.
How did the cast prepare for their roles in the drama?
Answer: While specific preparation details aren’t always public, actors typically engage in script readings, character analysis, and emotional research to authentically portray their roles.