"Fell on Black Days" is a song by the American rock band Soundgarden. Written by frontman Chris Cornell, "Fell on Black Days" was released as the fifth single from the band's fourth studio album, Superunknown (1994). The song peaked at number four on the Billboard Mainstream Rock Tracks chart. The song was included on Soundgarden's 1997 greatest hits album, A-Sides and the 2010 compilation Telephantasm as the Superunknown version on the single disk version and the video version on the Deluxe Edition.
Fell on Black Days" is a grunge song, and was written by frontman Chris Cornell. The time signature of the song is in 6/4. Cornell said, "On 'Fell on Black Days; the drums are totally straight, even though the riff is in six, so it doesn't feel quirky at all." Guitarist Kim Thayil has said that Soundgarden usually did not consider the time signature of a song until after the band had written it, and said that the use of odd meters was "a total accident.