Though Les Rallizes Dénudés, also known as Hadaka no Rallizes, were one of the earliest and most revolutionary Japanese psychedelic rock bands, and existed off and on through four decades, they are also one of the most obscure, barely known even in their native country. This cult of noise terrorists shrouded themselves in mystery, seldom touring and releasing no proper studio albums. Their sound presages the later psychedelic experimental noise of Fushitsusha, High Rise, Acid Mothers Temple, and others more than any other Japanese psychedelic group from the late '60s. Most of the recordings bearing the group's name are unofficial bootlegs, but a handful of authorized releases surfaced in 1991, including '77 Live, one of their most well-known works. These were reissued in 2022, along with The Oz Tapes, recorded in 1973.