ロスト・アラーフ (Lost Aaraaff) was a free improvisation group founded by 灰野敬二 (Keiji Haino), prior to the formation of 不失者 (Fushitsusha). Releases include the self-titled ロスト・アラーフ live album from 1970 (released by PSF in 1991), and 幻野祭コンサート (Concert from the Genyasai Festival) recorded at 幻野 (Genya-sai, Illusion Field festival) in 三里塚(Sanrizuka, Chiba) August '71 and released as part of the 魂の純愛 (Soul's True Love) 4cd box-set in '95. The group lasted until around 1975/1976.

Lost Aaraaff on Last.fm.