What makes Not Forgotten by Leftfield notable?

'Not Forgotten' became a significant track in the UK's underground dance scene, helping to propel Leftfield into the spotlight. The single's success laid the groundwork for their later acclaimed debut album 'Leftism', which further solidified their impact on electronic music. Released in January 1991, 'Not Forgotten' was Leftfield's debut single, marking their entry into the electronic music scene. At this point, the duo was beginning to establish themselves after forming in 1989, with a sound that would soon influence the burgeoning UK house and techno movements.