Polished J-rock that finds the epic scale in everyday heartbreak. Emotional, guitar-driven anthems for the wistful and the lovelorn.
Back number specializes in the specific ache of unrequited love and the messy, relatable reality of modern relationships. Their sound is built on a foundation of classic power trio rock - sturdy drums, melodic bass, and driving guitars - but it is frequently elevated by lush orchestral flourishes and piano that lend a cinematic weight to their emotional storytelling.
What truly distinguishes them is Iyori Shimizu's vocal delivery and lyrical perspective. He writes from the viewpoint of the 'back number' - the person left behind or the one who isn't the protagonist of the romance. His voice often strains at the top of his register, a physical manifestation of the emotional desperation and sincerity found in their biggest hits.
Start with 'Christmas Song' or 'Happy End' to hear their mastery of the winter ballad, then move to 'Takane no Hanako-san' for their more energetic, guitar-forward side. They are the definitive soundtrack for anyone who has ever felt like a supporting character in their own love story.
Back Number (バックナンバー; Bakku Nambā) is a Japanese rock power trio formed in 2004. The band consists of Iyori Shimizu (lead vocals, guitar), Kazuya Kojima (bass guitar, backing vocals), and Hisashi Kurihara (drums, percussion). The group signed to independent record label Idolsmith Recordings in 2009 and released their debut EP Nogashita Sakana (逃した魚, Fish Set Free) (2009) and studio album Ato no Matsuri (あとのまつり, Too Late) (2010). They signed to Universal Sigma in 2011. The band have a major cult following in Japan. The group's biggest hit is "Christmas Song", which peaked at number-one for three weeks on the Japan Hot 100 chart, and was later certified million by the Recording Industry Association of Japan. Their first compilation album, Encore (2016), reached number one on the Billboard Japan Hot Album for two consecutive weeks in 2016 and also ranked number five on the Oricon yearly best-selling album chart of 2017. In 2018, back number successfully held a Dome Tour titled “stay with you”, including a 2-night-concert in Tokyo Dome. All tickets for 5 concerts are sold out within 2 hours, mobilized over 45,000 guests per concert.
Shares studio polished, hi fi, layered dense (production style); pop rock, alternative rock, power pop (subgenres)
Shares pop rock, alternative rock, power pop (subgenres); studio polished, analog warmth, layered dense (production style)

Shares studio polished, hi fi, layered dense (production style); pop rock, alternative rock (subgenres)
Shares pop rock, alternative rock (subgenres); studio polished, hi fi, layered dense (production style)
Shares pop rock, alternative rock, power pop (subgenres); studio polished, hi fi, layered dense (production style)

Shares studio polished, hi fi, layered dense (production style); pop rock, alternative rock (subgenres)

Shares studio polished, hi fi, layered dense (production style); pop rock, alternative rock (subgenres)
Shares pop rock, alternative rock (subgenres); studio polished, analog warmth, layered dense (production style)

Shares pop rock, alternative rock (subgenres); studio polished, layered dense, analog warmth (production style)
Shares pop rock, alternative rock, power pop (subgenres); studio polished, analog warmth, layered dense (production style)
Shares love lost, power pop, sentimental, pop rock (signature)
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