The Portishead Effect is a term used to describe the unique sound of the English trip-hop band, Portishead. The band is known for their dark, moody sound, which combines elements of hip-hop, jazz, and electronica. The Portishead
From Wikipedia
Portishead are an English electronic band formed in 1991 in Bristol. The band comprises Beth Gibbons (vocals), Geoff Barrow, and Adrian Utley (guitar). Dave McDonald, an audio engineer who helped produce their first two albums, is sometimes regarded as the fourth member.