Unorthodox is the second full-length studio album by the Swedish death metal band Edge of Sanity. It was recorded between December 1991 and January 1992 with Rex Gisslén and released by Black Mark on July 8, 1992. Dan Swanö has claimed that this is his favorite Edge of Sanity album, and even went as far as to call it "perfect". Though primarily death metal, some tracks on this album foreshadow the shift to more melodic sounds which would take shape on 1993's The Spectral Sorrows. This is also the first Edge of Sanity album, as well as one of the first death metal records, to feature clean vocals, which appear in the track "Enigma".