Ken Hirai's classic and popular songs
Let me introduce you to songs by singer-songwriter Ken Hirai.
His charm lies in his high, beautiful vocals and rich expressiveness.
He has many famous songs, such as Rakuen, Hitomi wo Tojite, and Ookina Furudokei, which helped ignite his popularity.
He’s apparently a huge Southern All Stars fan, and it’s said that back in his student days he even delivered a demo tape to Keisuke Kuwata’s home.
- Ken Hirai’s Most Popular Songs Ranking [2026]
- Ken Hirai Love Songs: Popular Song Rankings [2026]
- Ken Hirai’s Tearjerker/Weepy Songs and Popular Tracks Ranking [2026]
- [Karaoke] A roundup of Ken Hirai songs that are easy to sing
- Ken Hirai Ballad Songs: Popular Song Rankings [2026]
- Ken Hirai Mutual Love Songs: Popular Songs Ranking [2026]
- Kenshiro Hirai’s Most Popular Karaoke Songs Ranking [2026]
- Ken Hirai’s Heartbreak Songs: Popular Track Rankings [2026]
- Ken Hirai’s Moving Songs and Popular Tracks Ranking [2026]
- Ken Hirai's Unrequited Love Songs: Popular Song Ranking [2026]
- Ken Hirai’s Cheer Songs and Popular Songs Ranking [2026]
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- [Karaoke] Easy-to-sing songs by Dai Hirai, with explanations
Ken Hirai’s Greatest and Most Popular Songs (41–50)
why(CASSETTE VISION remix)Hirai Ken

This is the remix version by DJ Tatsuta included on Ken Hirai’s remix album “Kh re-mixed up 1,” released in November 2001.
The laid-back BGM and the funny croaking, like a frog or a pig going “gue-gue,” make it interesting.
Ken Hirai’s masterpieces and popular songs (51–60)
Dear daysHirai Ken

This is the song chosen as the theme for the TV drama “JIN.” The lyrics are linked to the drama’s storyline, and it’s a grand ballad that conveys unfulfilled feelings and love that transcends time.
Ken Hirai’s vocals resonate all the more deeply, leaving a lasting emotional impact.
Goodbye, My LoveHirai Ken

A Japanese take on Philly soul delivered with a title in the style of kayōkyoku.
Over a sweet melody by Maestro T (Yoshihiro Toyoshima) and Kiyoshi Matsuo, it sings of parting from an unattainable love.
With Nobuyuki Shimizu joining to add droplet sounds and arrange strings and horns, the production beautifully depicts tender yet heartrending emotions.
I love you.Hirai Ken

It was selected as the theme song for the film Ghost: Once More to Hug You, starring Nanako Matsushima.
With a melody that poignantly tears at the heart through longing, layered with Chieko Kinbara’s fragile yet intense strings to move listeners to tears, it’s a supreme mid-tempo ballad produced by Seiji Kameda.
Grotesque feat. Namie AmuroHirai Ken

Released in April 2014.
This is the first featuring collaboration with Namie Amuro, a powerful track with energetic, pop, high-tempo music and lyrics themed as a cheer song for those struggling and wrestling with life.
Highly recommended for club music and more!
Buy My MelodyHirai Ken

It was selected as the CM song for au by KDDI’s “LISMO!”.
Although it’s a song about a love that has ended, it’s a pop number that hints at the brightness of taking a new step forward.
It has the distinctive shy yet cheerful love-song quality unique to Ken Hirai, who combines exceptional musical sensibility with an unaffected, warmly textured vocal.
You don’t know, do you?Hirai Ken

The theme song for the drama Unsolved Cases: Metropolitan Police Department Document Investigation Unit, starring Haru and sung by Ken Hirai, is a slow ballad that epitomizes “this is Ken Hirai!”—a simple, piano-centered accompaniment overlaid with his sweet vocals.
Centered on dialogue with oneself and introspection, it delicately portrays the conflicts and emotions that arise at the intersections of human relationships and society.
Hirai’s uniquely emotive singing is sure to evoke deep empathy in listeners.
Rather than depicting just one feeling or situation, the song captures the complexity of emotions experienced across various moments in life.
It portrays deep understanding and empathy between people, as well as the difficulties and conflicts encountered along the way, making it a track that will offer many listeners both resonance and comfort.


