Sigh

Sigh (Japanese: サイ, Hepburn: Sai) is a Japanese experimental metal band from Tokyo, formed in 1989. They gradually shifted from a traditional extreme metal sound to a more experimental, avant-garde style employing symphonic, world music, and progressive elements. Their most recent studio album, I Saw the World's End – Hangman's Hymn MMXXV, was released in 2025.