Massive Attack's third album arrived like a panic attack set to music, all suffocating bass and paranoid guitar scrapes. The Bristol crew stripped trip-hop of its lounge posturing, replacing it with industrial dread and dub's cavernous echo. Elizabeth Fraser's ethereal turn on Teardrop provided the only light in an otherwise pitch-black record.

What seemed claustrophobic in 1998 proved prophetic: this is what millennial anxiety sounds like, a template for two decades of brooding electronic music that followed.