HΛL is formed as a production group.
Gt./Key. 佐藤あつし, Gt./Key. 梅崎俊春
Vo. HΛLNA, Gt./Key. 佐藤あつし, Gt./Key. 梅崎俊春
HΛL release their first single “DECIDE”, which is a moderate success, reaching number 27 on the Oricon charts.
HΛL release their first full length album “Violation of the rules”, which reaches number 8 on the Oricon charts, becoming their best selling release to date.
Vo. HΛLNA and Gt./Key. 佐藤あつし both leave HΛL, both disintegrating the recording project, as well as making it the sole project of Gt./Key. 梅崎俊春
HΛL goes on as a production project of Gt./Key. 梅崎俊春, with Gt. 清水武仁 and Key. 中野雄太 joining.
Gt./Key. 梅崎俊春, Gt. 清水武仁, Key. 中野雄太
Key. 中野雄太 leaves, and Key. 丸山真由子 joins.
Gt./Key. 梅崎俊春, Gt. 清水武仁, Key. 丸山真由子
Gt. 清水武仁 and Key. 丸山真由子 both leave HΛL.