This is a list of notable events in music that took place in the year 1991.

Blue Lines is the debut studio album by English electronic music group Massive Attack, released on 8 April 1991 by Wild Bunch and Virgin Records. The recording was led by members Grantley "Daddy G" Marshall, Robert "3D" Del Naja, Adrian "Tricky" Thaws, and Andrew "Mushroom" Vowles, with co-production by Jonny Dollar. It also features contributions by singers Shara Nelson and Horace Andy. Generally regarded as the first "trip hop" album, Blue Lines blended elements of hip hop with dub, soul, reggae, and electronic music.