Relativity’s Hit Song Rankings [2026]

LOVE Zukkyunsōtaisei riron1rank/position

Theory of Relativity “LOVE Zukkyun” / Soutaiseiriron – “LOVE Zukkyun”

Cross the Chuo Line and you’re in outer space? Soutaiseiriron’s songs are captivating for their unique worldview where the ordinary and the extraordinary intersect.

The chorus line also makes a powerful impact.

Included on their self-produced album “Chiffon Shugi,” released in June 2007, this track topped Tower Records’ nationwide Weekly J-POP Indies chart.

With dynamic drums and a bouncy bassline, its guitar pop sound is guaranteed to light up any karaoke session! It’s a perfect pick for anyone who wants to express feelings of love in a quirky, offbeat way.

My heart, hard pinch.sōtaisei riron2rank/position

Theory of Relativity - My Heart Hard Pinch

Included as the seventh track on the 2010 album “Synchroniciteen.” Its charm lies in a laid-back, poppy sound; unique lyrics that weave in the Japanese syllabary; and Etsuko Yakushimaru’s cute vocals, tinged with a languid, coquettish allure.

That girl I can’t stop thinking aboutsōtaisei riron3rank/position

Theory of Relativity – That Girl I’m Curious About

Relativism’s “That Girl on My Mind” expresses the complex feelings experienced during sensitive times in a straightforward way.

The emotions we all likely felt during our complicated school days create a pleasant harmony through its refreshing melody and her gentle singing voice.

When you don’t want to overthink and just want to sing as naturally as breathing, this is the song for you.

Sumatra Guard Corpssōtaisei riron4rank/position

Theory of Relativity – Sumatra Security Unit (High Quality)

Recommended for female vocalists and girl bands: Soutaiseiriron.

A simple four-piece band setup with vocals, guitar, bass, and drums.

Tip: the vocalist should sing close to the mic to better reproduce the original sound.

The instruments are rhythm-focused.

If you can keep the groove going, it should feel great to play.

Cerberussōtaisei riron5rank/position

Soutaiseiriron “Kerberos” MV

This song has a mysterious atmosphere and worldview.

It’s a work by the band Soutei Riron (a.k.a.

Ringo Shiina’s side project? actually, ‘Soutaiseiriron’) included on their fifth album, “Tensei Jingle,” released in 2016.

The word “Cerberus” might sound scary, but the song itself is very cute.

It plays on the idea of a Cerberus that never lets go once it bites and the feeling of wanting to stay with you forever, no matter what—like a love song.

Sparkling keyboard tones, transparent guitar phrases, and Etsuko Yakushimaru’s delicate, ephemeral vocals—the ensemble is wonderful.

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Araki Jakkan

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Peperoncino Candysōtaisei riron6rank/position

Theory of Relativity – Peperoncino Candy

Formed in 2006 around Shuichi Manabe, known for his work with Vampillia and Shudan Kodo, Soutaiseiriron is a band and project that has continued to operate in a DIY manner while presenting a unique musicality in Japan’s indie scene since the late 2000s, featuring distinctive artists like vocalist Etsuko Yakushimaru.

“Peperoncino Candy,” included on their classic third album Synchroniciteen released in 2010, is a deceptively cute pop song whose twisted sensibility makes it a delight, and in fact the lyrics even include the word “Hinamatsuri” (Girls’ Day).

At the same time, it’s not necessarily a Hinamatsuri song per se; its lyrics have an ineffable, mysterious quality.

That’s exactly why it might be fun to listen to it on March 3 as a curveball Hinamatsuri tune!

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KOH-1

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Hell Teachersōtaisei riron7rank/position

Jigoku Sensei

When you find yourself drawn to someone special like a school teacher, it’s easy to feel conflicted.

That’s when I recommend “Jigoku Sensei” by Soutaiseiriron.

Its gentle vocals and lyrical melody tenderly wrap around emotions considered forbidden.

The lyrics softly portray the feelings of the girl in the song, offering support to those who find it hard to put their own emotions into words.

The unique sound crafted by Soutaiseiriron brings color to everyday life filled with feelings for a teacher and offers comfort to the listener’s heart.