REOL (stylized as RΞOL) was a Japanese musical unit that consisted of vocalist/lyricist Reol, music arranger GigaP, and movie director/producer Okiku. The members of REOL originally worked as solo artists, but they signed to Toy's Factory as a group in 2015, using Reol's name for the project. Prior to this unit's formation, Reol and GigaP consistently worked together throughout Reol's solo career, eventually releasing an album together titled No Title. Their debut studio album as the unit REOL, Sigma, was released on October 19, 2016.
2014–present: Prior releases and Sigma
Prior to the formation of REOL, the groups members, Reol and GigaP, had consistently worked together, providing compositions and vocals to several Japanese vocaloids including Hatsune Miku, Kagamine Rin, Kagamine Len and more. Their first release as a duo through label, Celo Project, was No Title, which was released on August 17, 2014. Additionally, Reol worked on her 2015 debut studio album, titled Gokusaishiki, which reached the top ten on the Oricon Albums Chart.
Subsequently, Reol, GigaP, and movie director Okiku signed a recording contract to Japanese label Toy's Factory, forming themselves as a unit under Reol's name. Despite its release, the group had stayed anonymous with their identity, using anime-influenced illustrations to depict themselves; several other animations were also distributed in their subsequent music videos. On August 18, 2016, they announced the release for their studio album Sigma, scheduled on October 19, 2016. Additionally, they released three visuals from the album; "ChiruChiru", "Give Me a Break Stop Now" and "YoiYoi Kokon". Released on its initial date, Sigma debuted at number six on the Daily Oricon Albums Chart.
On August 1, 2017, REOL announced that they would separate in October 2017 after playing their final two shows.
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|"—" denotes releases that did not chart or was not released.|
- Rogers, Krista (May 30, 2015). "Amateur vocalist Reol channeling Internet fame into solo album debut this summer". Japan Today. Retrieved October 21, 2016.
- No Title. Celo Project (CD; Liner notes). Reol. 2014. CCCC-0000.
- Michel, Patrick St. (September 19, 2015). "Rising Beatmaker Reol Takes Vocaloid to Another Level". MTV 81. Retrieved October 21, 2016.
- "Reol Biography". Toy's Factory website. Retrieved October 21, 2016.
- "Reol Official". Reol's official YouTube channel. Retrieved October 21, 2016.
- "Reol to Release New Album "Sigma" with CDJapan Exclusive Bonus". CDJapan.co.jp. August 18, 2016. Retrieved October 21, 2016.
- "[MV] Reol / ChiruChiru". Reol's official YouTube channel. June 30, 2016. Retrieved October 21, 2016.
- "[MV] Reol / Give Me a Break Stop Now". Reol's official YouTube channel. August 18, 2016. Retrieved October 21, 2016.
- "[MV] Reol / YoiYoi Koron". Reol's official YouTube channel. September 15, 2016. Retrieved October 21, 2016.
- "Oricon Daily CD Albums Chart" (in Japanese). Oricon Style. October 18, 2016. Archived from the original on October 20, 2016. Retrieved October 21, 2016.
- "REOL to disband after performing their 2 last shows, here are their thoughts". JRock News. August 1, 2017. Retrieved August 12, 2017.
- Sigma. Toy's Factory (CD; Liner notes). Reol. 2016. TFCC-86570.