IU’s Most Popular Songs Ranking [2026]

Bye, SummerIU46rank/position

IU ‘바이, 썸머’ Lyric Video

A digital single by IU, a nationally beloved singer with immense popularity, released in September 2025.

Remarkably, it’s the number fans have been eagerly awaiting ever since she performed it during her 2024 world tour! IU herself wrote the lyrics and crafted the melody, releasing the song as a gift to share the end of summer with her fans.

Set against a clear, shimmering band sound, it expresses a bittersweet farewell to the passing summer and gratitude for the irreplaceable moments spent with her fans.

You can almost picture the cool breeze and twilight scenes, and feel a heart-tugging sense of poignancy.

It’s perfect for those moments at summer’s end when you want to look back on memories and sink into a slightly sentimental mood.

This work is an emotional piece that conveys IU’s deep affection for her fans.

Dlwlrma(이 지금)IU47rank/position

[IU] dlwlrma(이지금) & Jam Jam(잼잼) Concert Live Clip (@ 2017 Tour ‘Palette’)

IU can be called a national artist of South Korea.

This track is included on her 2017 album “Palette.” With its relaxed, gentle vibe and IU’s signature fantasy-tinged, positive message, it’s a lovely song.

It went viral thanks to Korean TikToker Hailon’s hand-dance.

The choreography expresses the lyrics and is super cute.

Packed with charm that matches the sound of the song itself, it’s perfect for dancing to—give it a try! It’s sure to make both viewers and listeners’ hearts flutter and lift their spirits.

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KEI

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우울시계 (feat.종현 of SHINee)IU48rank/position

A Gloomy Clock (feat. Jong-hyun) (우울시계 (feat.종현 of SHINee))

It’s a stylish song sung over bossa nova–style guitar, but the title “A Gloomy Clock” is intriguingly suggestive, isn’t it? Included on singer IU’s 2013 album Modern Times—she’s known in Korea as the “Nation’s Little Sister”—the track 우울시계, also known in Japanese as “憂鬱時計” (Gloomy Clock), was composed by SHINee’s Jonghyun, who sadly passed away in 2017.

With IU’s languid, ennui-tinged vocals, it’s the kind of song you’d want to play on a relaxed afternoon, yet the lyrics are anything but bright—that contrast is part of its appeal.

It’s a masterpiece to listen to when everything feels frustratingly bleak and melancholy.

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Dream HighIU, Kim Soo Hyun,Taecyeon, Eunjung, Suzy, Wooyoung49rank/position

Dream High — IU, Kim Soo Hyun,Taecyeon, Eunjung, Suzy, Wooyoung

It’s the OST from the 2011 school drama “Dream High.” Same title, right? It’s a masterpiece co-produced by Bae Yong-joon and Park Jin-young, who is also TWICE’s producer.

Just like the drama, the soundtrack is star-studded, featuring members like miss A’s Suzy, 2PM’s Taecyeon, T-ARA’s Eunjung, and 2PM’s Wooyoung! It’s such a great set of songs—I really want you to listen to it at least once!

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KEI

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Twenty-threeIU50rank/position

[MV] IU(아이유) _ Twenty-three(스물셋)

This is the title track from the 2015 mini album “CHAT-SHIRE.” Cute, childlike IU and grown-up IU; IU in love and free-spirited IU; IU working hard… Which is better: growing from a girl into a woman, or staying a child? It’s a song that reveals that kind of inner conflict.