What makes III by Orbital notable?

'III' is notable for its track 'Belfast,' which became an underground hit and significantly contributed to the rise of intelligent dance music (IDM). The EP helped cement Orbital's place in the electronic music hierarchy, receiving critical acclaim from various publications and charting successfully in the UK dance charts. Released on January 7, 1991, 'III' marked Orbital's third EP, following their breakthrough self-titled debut in 1990. At this point, the Hartnoll brothers were solidifying their reputation within the UK rave scene, creating a signature sound that would influence the evolving landscape of electronic music.