A mix of electronic music , hip hop , dub music , '70s soul music and reggae , the album established Massive Attack as one of the most best British bands of the 1990s and the founder of trip hop 's Bristol Sound . A fusion of electronic music , hip hop , dub , '70s soul and reggae , the album established Massive Attack as one of the most innovative British bands of the 1990s and the founder of trip hop 's Bristol Sound .