[KAT-TUN’s Masterpieces] A Curated Selection of Hit Songs and Fan-Favorite Tracks
Since their debut, KAT-TUN captivated many fans with their unique worldview and performances, and on March 31, 2025, they brought their journey as a group to a close.
Their songs are packed with elements that move listeners’ hearts—fierce yet heartrending lyrics, cool sounds, and more.
Many of you likely have that one special track—“I love that song!” or “This is the song that introduced me to them.” In this article, we’ll introduce KAT-TUN’s classic and popular songs.
From nostalgic tracks to timeless tunes that still shine today, we hope you’ll find your favorite.
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[KAT-TUN’s Classic Songs] A curated selection of hit songs and fan-favorite tracks (21–30)
4UNEW!KAT-TUN
A hidden gem that was included only on the standard edition of the mini-album “Kusabi” released in November 2013.
Amid a lineup of tie-in tracks and hard-hitting numbers, this song is placed toward the end of the album, serving to evoke a warm, gentle glow.
The lyrics convey the inevitability of the encounter and deep gratitude toward the other person, and it seems to carry messages of “bond” and “connection” as the group, now a four-member formation, embarked on a fresh start.
Set to an urbane J-pop sound, the members’ distinct vocal timbres blend beautifully, giving a palpable sense of the group’s depth.
BLESSNEW!KAT-TUN
A track included on the standard edition of the mini-album “Kusabi” released in November 2013.
This period marked an important turning point as the group moved forward as a four-member unit.
The song is a lyrical medium-tempo tune that delicately traces fragments of memory to portray lost time and feelings for someone dear.
Its clear, transparent vocals and beautifully spacious arrangement convey both poignancy and warmth at the same time.
While they’re often associated with intense dance tracks and rock numbers, introspective and emotional songs like this are also immensely compelling.
BLUE TUESDAYNEW!KAT-TUN
A quiet, wistful ballad included as track 5 on the standard edition of the album “Best of KAT-TUN,” released in March 2006, the month of KAT-TUN’s debut.
It tenderly sings of the lingering aftertaste of a finished love and the sense of loss that remains in everyday life.
The poignant scene of waiting on a Tuesday—just an ordinary weekday—for a phone call you know will never come really resonates.
It’s a song that lets you savor the delicate expressiveness the group possessed at their debut, beyond just their wild edge.
Give it a listen on a night when you want something to accompany a sentimental mood, or if you’re quietly trying to move forward while carrying the pain of heartbreak.
BUTTERFLYNEW!KAT-TUN
This unit song, with lyrics written by Jin Akanishi and Tatsuya Ueda, intricately weaves together the voices of two artists who exude both allure and defiance, painting a deeply sensual world where reason yields to instinct.
It’s a medium-tempo track infused with R&B and Latin elements, packed with the group’s dark, sexy aesthetic.
Included on the classic album “Best of KAT-TUN,” released in March 2006, this piece is a top recommendation when you want to forget the hustle of everyday life and immerse yourself in a bewitching atmosphere, or when you want to savor richly mature, intensely captivating vocals.
HEART BEATNEW!KAT-TUN
This is a hidden gem included only on the regular edition of the hit single released in February 2010, “Loveyourself ~I love the you you hate~.” It sings of a strong resolve to accept everything about the other person—even their past and their weaknesses—and move forward together into the future.
From a street corner where a cold wind blows, it bursts open into a sense of exhilaration and warmth that feels like your field of view suddenly expanding.
It’s a highly recommended track to listen to when you want to protect someone precious to you, or when you need a song to gently stay close to a wounded heart!
HONESTYNEW!KAT-TUN
This is a coupling track that was included only on the regular edition of the single “UNLOCK,” released in March 2016.
Rather than flashy mind games, it straightforwardly portrays the bewilderment and purity of the moment a heart begins to move in everyday life—a love song that exudes a gentle, intimate atmosphere.
Unusual for a KAT-TUN track, it’s a mid-tempo pop number that puts sincere emotional shifts front and center, and live footage of the song was included as a bonus in the video release of their 2022 nationwide tour.
The members’ tender, embracing vocals are soothing and will warm your heart.
MOONNEW!KAT-TUN
A KAT-TUN track released in April 2009.
Included only as a bonus track on the standard edition of the album “Break the Records -by you & for you-,” this song could truly be called a hidden gem.
Its romantic motifs—night and the moon, as the title suggests—mesh perfectly with the group’s cool, sultry vibe.
Even without a major tie-in, it has been loved for years, earning a spot on the 2016 fan-voted best-of compilation.
It’s the perfect song to listen to when you want to gaze up at the night sky and linger in a gentle afterglow.